SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                ----------------

                                 SCHEDULE 13G/A
                                 (Rule 13d-102)
                                ----------------

    INFORMATION TO BE INCLUDED IN STATEMENTS PURSUANT TO RULES 13d-1(b), (c)
             AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO 13d-2
                    UNDER THE SECURITIES EXCHANGE ACT OF 1934
                               (Amendment No. 1)*


                             IDX SYSTEMS CORPORATION
                                (Name of Issuer)

                          Common Stock, $.01 par value
                         (Title of Class of Securities)

                                    449491109
                                 (CUSIP Number)

                                December 31, 2002
             (Date of Event Which Requires Filing of this Statement)


     Check the appropriate box to designate the rule pursuant to which this
Schedule is filed:
     [ ]  Rule 13d-1(b)
     [X]  Rule 13d-1(c)
     [ ]  Rule 13d-1(d)

-----------

     * The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which would
alter the disclosures provided in a prior cover page.

     The information required in the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 ("Act") or otherwise subject to the liabilities of that section of
the Act but shall be subject to all other provisions of the Act (however, see
the Notes).




Schedule 13G/A                                                  PAGE 2 OF 14

CUSIP No. 449491109

-----------------------------------------------------------------------------
     (1)    NAME OF REPORTING PERSON
            S.S. OR I.R.S. IDENTIFICATION NO.
            OF ABOVE PERSON
                                                       CLSP, L.P.
-----------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                    (a) [x]
                                                                    (b) [ ]
-----------------------------------------------------------------------------
     (3)    SEC USE ONLY

-----------------------------------------------------------------------------
     (4)    CITIZENSHIP OR PLACE OF ORGANIZATION
                                             Delaware
-----------------------------------------------------------------------------

NUMBER OF      (5)  SOLE VOTING POWER
                                             0
SHARES         --------------------------------------------------------------

BENEFICIALLY   (6)  SHARED VOTING POWER
                                             564,000
OWNED BY       --------------------------------------------------------------

EACH           (7)  SOLE DISPOSITIVE POWER
                                             0
REPORTING      --------------------------------------------------------------

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                                             564,000
-----------------------------------------------------------------------------
     (9)  AGGREGATE AMOUNT BENEFICIALLY OWNED
          BY EACH REPORTING PERSON
                                             564,000
-----------------------------------------------------------------------------
    (10)  CHECK BOX IF THE AGGREGATE AMOUNT
          IN ROW (9) EXCLUDES CERTAIN SHARES                             [ ]
-----------------------------------------------------------------------------
    (11)  PERCENT OF CLASS REPRESENTED
          BY AMOUNT IN ROW (9)
                                             1.9%
-----------------------------------------------------------------------------
    (12)  TYPE OF REPORTING PERSON
                                             PN
-----------------------------------------------------------------------------




Schedule 13G/A                                                  PAGE 3 OF 14

CUSIP No. 449491109

-----------------------------------------------------------------------------
     (1)   NAME OF REPORTING PERSON
           S.S. OR I.R.S. IDENTIFICATION NO.
           OF ABOVE PERSON
                                                     CLSP II, L.P.
-----------------------------------------------------------------------------
     (2)   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                    (a) [x]
                                                                    (b) [ ]
-----------------------------------------------------------------------------
     (3)   SEC USE ONLY

-----------------------------------------------------------------------------
     (4)   CITIZENSHIP OR PLACE OF ORGANIZATION
                                          Delaware
-----------------------------------------------------------------------------

NUMBER OF      (5)  SOLE VOTING POWER
                                          0
SHARES         --------------------------------------------------------------

BENEFICIALLY   (6)  SHARED VOTING POWER
                                          389,000
OWNED BY       --------------------------------------------------------------

EACH           (7)  SOLE DISPOSITIVE POWER
                                          0
REPORTING      --------------------------------------------------------------

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                                          389,000
-----------------------------------------------------------------------------
     (9)  AGGREGATE AMOUNT BENEFICIALLY OWNED
          BY EACH REPORTING PERSON
                                          389,000
-----------------------------------------------------------------------------
    (10)  CHECK BOX IF THE AGGREGATE AMOUNT
          IN ROW (9) EXCLUDES CERTAIN SHARES                             [ ]
-----------------------------------------------------------------------------
    (11)  PERCENT OF CLASS REPRESENTED
          BY AMOUNT IN ROW (9)
                                          1.3%
-----------------------------------------------------------------------------
    (12)  TYPE OF REPORTING PERSON
                                          PN
-----------------------------------------------------------------------------




Schedule 13G/A                                                  PAGE 4 OF 14

CUSIP No. 449491109

-----------------------------------------------------------------------------
     (1)   NAME OF REPORTING PERSON
           S.S. OR I.R.S. IDENTIFICATION NO.
           OF ABOVE PERSON
                                                 CLSP/SBS I, L.P.
-----------------------------------------------------------------------------
     (2)   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                    (a) [x]
                                                                    (b) [ ]
-----------------------------------------------------------------------------
     (3)   SEC USE ONLY

-----------------------------------------------------------------------------
     (4)   CITIZENSHIP OR PLACE OF ORGANIZATION
                                            Delaware
-----------------------------------------------------------------------------

NUMBER OF      (5)  SOLE VOTING POWER
                                            0
SHARES         --------------------------------------------------------------

BENEFICIALLY   (6)  SHARED VOTING POWER
                                            208,800
OWNED BY       --------------------------------------------------------------

EACH           (7)  SOLE DISPOSITIVE POWER
                                            0
REPORTING      --------------------------------------------------------------

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                                            208,800
-----------------------------------------------------------------------------
     (9)  AGGREGATE AMOUNT BENEFICIALLY OWNED
          BY EACH REPORTING PERSON
                                            208,800
-----------------------------------------------------------------------------
    (10)  CHECK BOX IF THE AGGREGATE AMOUNT
          IN ROW (9) EXCLUDES CERTAIN SHARES                             [ ]
-----------------------------------------------------------------------------
    (11)  PERCENT OF CLASS REPRESENTED
          BY AMOUNT IN ROW (9)
                                            0.7%
-----------------------------------------------------------------------------
    (12)  TYPE OF REPORTING PERSON
                                            PN
-----------------------------------------------------------------------------




Schedule 13G/A                                                  PAGE 5 OF 14

CUSIP No. 449491109

-----------------------------------------------------------------------------
     (1)   NAME OF REPORTING PERSON
           S.S. OR I.R.S. IDENTIFICATION NO.
           OF ABOVE PERSON
                                                  CLSP/SBS II, L.P.
-----------------------------------------------------------------------------
     (2)   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                    (a) [x]
                                                                    (b) [ ]
-----------------------------------------------------------------------------
     (3)   SEC USE ONLY

-----------------------------------------------------------------------------
     (4)   CITIZENSHIP OR PLACE OF ORGANIZATION
                                              Delaware
-----------------------------------------------------------------------------

NUMBER OF      (5)  SOLE VOTING POWER
                                              0
SHARES         --------------------------------------------------------------

BENEFICIALLY   (6)  SHARED VOTING POWER
                                              71,900
OWNED BY       --------------------------------------------------------------

EACH           (7)  SOLE DISPOSITIVE POWER
                                              0
REPORTING      --------------------------------------------------------------

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                                              71,900
-----------------------------------------------------------------------------
     (9)  AGGREGATE AMOUNT BENEFICIALLY OWNED
          BY EACH REPORTING PERSON
                                              71,900
-----------------------------------------------------------------------------
    (10)  CHECK BOX IF THE AGGREGATE AMOUNT
          IN ROW (9) EXCLUDES CERTAIN SHARES                             [ ]
-----------------------------------------------------------------------------
    (11)  PERCENT OF CLASS REPRESENTED
          BY AMOUNT IN ROW (9)
                                              0.2%
-----------------------------------------------------------------------------
    (12)  TYPE OF REPORTING PERSON
                                              PN
-----------------------------------------------------------------------------




Schedule 13G/A                                                  PAGE 6 OF 14

CUSIP No. 449491109

-----------------------------------------------------------------------------
     (1)    NAME OF REPORTING PERSON
            S.S. OR I.R.S. IDENTIFICATION NO.
            OF ABOVE PERSON
                                             Cooper Hill Partners, L.P.
-----------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                    (a) [x]
                                                                    (b) [ ]
-----------------------------------------------------------------------------
     (3)    SEC USE ONLY

-----------------------------------------------------------------------------
     (4)    CITIZENSHIP OR PLACE OF ORGANIZATION
                                              Delaware
-----------------------------------------------------------------------------

NUMBER OF      (5)  SOLE VOTING POWER
                                              0
SHARES         --------------------------------------------------------------

BENEFICIALLY   (6)  SHARED VOTING POWER
                                              299,000
OWNED BY       --------------------------------------------------------------

EACH           (7)  SOLE DISPOSITIVE POWER
                                              0
REPORTING      --------------------------------------------------------------

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                                              299,000
-----------------------------------------------------------------------------
     (9)  AGGREGATE AMOUNT BENEFICIALLY OWNED
          BY EACH REPORTING PERSON
                                              299,000
-----------------------------------------------------------------------------
    (10)  CHECK BOX IF THE AGGREGATE AMOUNT
          IN ROW (9) EXCLUDES CERTAIN SHARES                             [ ]
-----------------------------------------------------------------------------
    (11)  PERCENT OF CLASS REPRESENTED
          BY AMOUNT IN ROW (9)
                                              1.0%
-----------------------------------------------------------------------------
    (12)  TYPE OF REPORTING PERSON
                                              PN
-----------------------------------------------------------------------------




Schedule 13G/A                                                 PAGE 7 OF 14

CUSIP No. 449491109

-----------------------------------------------------------------------------
     (1)   NAME OF REPORTING PERSON
           S.S. OR I.R.S. IDENTIFICATION NO.
           OF ABOVE PERSON
                                               Cooper Hill Partners, LLC
-----------------------------------------------------------------------------
     (2)   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                    (a) [x]
                                                                    (b) [ ]
-----------------------------------------------------------------------------
     (3)   SEC USE ONLY

-----------------------------------------------------------------------------
     (4)   CITIZENSHIP OR PLACE OF ORGANIZATION
                                            Delaware
-----------------------------------------------------------------------------

NUMBER OF      (5)  SOLE VOTING POWER
                                            0
SHARES         --------------------------------------------------------------

BENEFICIALLY   (6)  SHARED VOTING POWER
                                            1,233,700
OWNED BY       --------------------------------------------------------------

EACH           (7)  SOLE DISPOSITIVE POWER
                                            0
REPORTING      --------------------------------------------------------------

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                                            1,233,700
-----------------------------------------------------------------------------
     (9)  AGGREGATE AMOUNT BENEFICIALLY OWNED
          BY EACH REPORTING PERSON
                                            1,233,700
-----------------------------------------------------------------------------
    (10)  CHECK BOX IF THE AGGREGATE AMOUNT
          IN ROW (9) EXCLUDES CERTAIN SHARES                             [ ]
-----------------------------------------------------------------------------
    (11)  PERCENT OF CLASS REPRESENTED
          BY AMOUNT IN ROW (9)              4.2%
-----------------------------------------------------------------------------
    (12)  TYPE OF REPORTING PERSON
                                            OO
-----------------------------------------------------------------------------




Schedule 13G/A                                                 PAGE 8 OF 14

CUSIP No. 449491109

-----------------------------------------------------------------------------
     (1)   NAME OF REPORTING PERSON
           S.S. OR I.R.S. IDENTIFICATION NO.
           OF ABOVE PERSON
                                                      Jeffrey Casdin
-----------------------------------------------------------------------------
     (2)   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                    (a) [x]
                                                                    (b) [ ]
-----------------------------------------------------------------------------
     (3)   SEC USE ONLY

-----------------------------------------------------------------------------
     (4)   CITIZENSHIP OR PLACE OF ORGANIZATION
                                           United States
-----------------------------------------------------------------------------

NUMBER OF      (5)  SOLE VOTING POWER
                                           0
SHARES         --------------------------------------------------------------

BENEFICIALLY   (6)  SHARED VOTING POWER
                                           1,532,700
OWNED BY       --------------------------------------------------------------

EACH           (7)  SOLE DISPOSITIVE POWER
                                           0
REPORTING      --------------------------------------------------------------

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                                           1,532,700
-----------------------------------------------------------------------------
     (9)  AGGREGATE AMOUNT BENEFICIALLY OWNED
          BY EACH REPORTING PERSON
                                           1,532,700
-----------------------------------------------------------------------------
    (10)  CHECK BOX IF THE AGGREGATE AMOUNT
          IN ROW (9) EXCLUDES CERTAIN SHARES                             [ ]
-----------------------------------------------------------------------------
    (11)  PERCENT OF CLASS REPRESENTED
          BY AMOUNT IN ROW (9)
                                           5.3%
-----------------------------------------------------------------------------
    (12)  TYPE OF REPORTING PERSON
                                           IN
-----------------------------------------------------------------------------




Schedule 13G/A                                                  PAGE 9 OF 14

ITEM 1(a).  NAME OF ISSUER:
             IDX SYSTEMS CORPORATION

ITEM 1(b).  ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:
             40 IDX Drive, South Burlington, VT  05403

ITEM 2(a).  NAME OF PERSON FILING:

     This statement is filed by:
          (i) CLSP, L.P. ("CLSP"), a Delaware limited partnership, with respect
              to the Securities owned by it;
         (ii) CLSP II, L.P. ("CLSP II") a Delaware limited partnership, with
              respect to the Securities owned by it;
        (iii) CLSP/SBS I, L.P. ("CLSP/SBS I") a Delaware limited partnership,
              with respect to the Securities owned by it;
         (iv) CLSP/SBS II, L.P. ("CLSP/SBS II") a Delaware limited partnership,
              with respect to the Securities owned by it;
          (v) Cooper Hill Partners, L.P., a Delaware limited partnership with
              respect to the Securities held for CLSP Overseas, Ltd. ("CLSP
              Overseas"), [a Cayman Islands exempted company];
         (vi) Cooper Hill Partners, LLC ("Cooper, LLC "), a Delaware limited
              liability company and the sole general partner of CLSP, CLSP II,
              CLSP/SBS I AND CLSP/SBS II with respect to the Securities owned by
              CLSP, CLSP II, CLSP/SBS I AND CLSP/SBS II; and
        (vii) Jeffrey Casdin a citizen of the United States, and the Managing
              Member of Casdin Capital, LLC, the general partner of Cooper Hill
              Partners, L.P. and the managing member of Cooper LLC, with respect
              to Securities subject to the control of Cooper LLC and Cooper Hill
              Partners, LP.

              The foregoing persons (other than CLSP Overseas) are hereinafter
              sometimes collectively referred to as the "Reporting Persons." Any
              disclosures herein with respect to persons other than the
              Reporting Persons are made on information and belief after making
              inquiry to the appropriate party.




Schedule 13G/A                                               PAGE 10 OF 14

ITEM 2(b).  ADDRESS OF PRINCIPAL OFFICE OR, IF NONE, RESIDENCE:
            The business address of each of the Reporting Persons is 230 Park
Avenue, New York, New York 10169. The business address of CLSP Overseas is c/o
Goldman Sachs (Cayman) Trust, Limited P.O. Box 896 G.T. Harbour Centre, Second
Floor, North Church Street, George Town, Grand Cayman, Cayman Islands, B.W.I.

ITEM 2(c).  CITIZENSHIP:
             Cooper LLC is a Delaware limited liability company and CLSP, CLSP
II, CLSP/SBS I, CLSP/SBS II and Cooper Hill Partners, L.P. are each a Delaware
limited partnership. CLSP Overseas is a Cayman Islands exempted company. Jeffrey
Casdin is a citizen of the United States.

ITEM 2(d).  TITLE OF CLASS OF SECURITIES: Common Stock, $.01 par value

ITEM 2(e).  CUSIP NUMBER:   449491109

ITEM 3. IF THIS STATEMENT IS FILED PURSUANT TO 13d-1(b) OR 13d-2(b) OR (c),
CHECK WHETHER THE PERSON FILING IS A:

          (a) [ ] Broker or dealer registered under Section 15 of the Act

          (b) [ ] Bank as defined in Section 3(a)(6) of the Act

          (c) [ ] Insurance Company as defined in Section 3(a)(19) of the
                  Act

          (d) [ ] Investment Company registered under Section 8 of the
                  Investment Company Act of 1940

          (e) [ ] Investment Adviser registered under Section 203 of the
                  Investment Advisers Act of 1940: see Rule 13d-
                  1(b)(1)(ii)(E)

          (f) [ ] Employee Benefit Plan, Pension Fund which is subject to
                  the provisions of the Employee Retirement Income Security
                  Act of 1974 or Endowment Fund; see Rule 13d- 1(b)(1)(ii)(F)

          (g) [ ] Parent Holding Company, in accordance with Rule 13d-
                  1(b)(ii)(G);

          (h) [ ] Savings Associations as defined in Section 3(b) of the
                  Federal Deposit Insurance Act;

          (i) [ ] Church Plan that is excluded from the definition of an
                  investment company under Section 3(c)(14) of the Investment
                  Company Act of 1940;



Schedule 13G/A                                                PAGE 11 OF 14

          (j) [ ] Group, in accordance with Rule 13d-1(b)(1)(ii)(J).

     IF THIS STATEMENT IS FILED PURSUANT TO Rule 13d-1(c), CHECK THIS BOX. [x]


ITEM 4.   OWNERSHIP.
     A.  CLSP
        (a) Amount beneficially owned: 564,000
        (b) Percent of class: 1.9%
            (All percentages herein are based on 29,034,596 shares of Common
            Stock reported to be outstanding as of November 4, 2002, as
            reflected in the Company's quarterly report on Form 10-Q filed
            with the Securities and Exchange Commission by the Company for
            the quarter ended September 30, 2002.)
        (c) Number of shares as to which such person has:
            (i) sole power to vote or to direct the vote 0
           (ii) shared power to vote or to direct the vote 564,000
          (iii) sole power to dispose or to direct the disposition of 0
           (iv) shared power to dispose or to direct the disposition of
                564,000

B. CLSP II
        (a) Amount beneficially owned: 389,000
        (b) Percent of class: 1.3%
        (c) Number of shares as to which such person has:
            (i) sole power to vote or to direct the vote 0
           (ii) shared power to vote or to direct the vote 389,000
          (iii) sole power to dispose or to direct the disposition of 0
           (iv) shared power to dispose or to direct the disposition of
                389,000

     C. CLSP/SBS I
        (a) Amount beneficially owned: 208,800
        (b) Percent of class: 0.7%
        (c) Number of shares as to which such person has:
            (i) sole power to vote or to direct the vote 0
           (ii) shared power to vote or to direct the vote 208,800
          (iii) sole power to dispose or to direct the disposition of 0




  Schedule 13G/A                                                PAGE 12 OF 14

           (iv) shared power to dispose or to direct the disposition of
                208,800

     D. CLSP/SBS II
        (a) Amount beneficially owned: 71,900
        (b) Percent of class: 0.2%
        (c) Number of shares as to which such person has:
            (i) sole power to vote or to direct the vote 0
           (ii) shared power to vote or to direct the vote 71,900
          (iii) sole power to dispose or to direct the disposition of 0
           (iv) shared power to dispose or to direct the disposition of
                71,900

     E. Cooper Hill Partners, L.P.
        (a) Amount beneficially owned: 299,000
        (b) Percent of class: 1.0%
        (c) Number of shares as to which such person has:
            (i) sole power to vote or to direct the vote 0
           (ii) shared power to vote or to direct the vote 299,000
          (iii) sole power to dispose or to direct the disposition of 0
           (iv) shared power to dispose or to direct the disposition of
                299,000

     F. Cooper LLC
        (a) Amount beneficially owned: 1,233,700
        (b) Percent of class: 4.2%
        (c) Number of shares as to which such person has:
            (i) sole power to vote or to direct the vote 0
           (ii) shared power to vote or to direct the vote 1,233,700
          (iii) sole power to dispose or to direct the disposition of 0
           (iv) shared power to dispose or to direct the disposition
                of 1,233,700



Schedule 13G/A                                                 PAGE 13 OF 14

     G.  Jeffrey Casdin
        (a) Amount beneficially owned: 1,532,700
        (b) Percent of class: 5.3%
        (c) Number of shares as to which such person has:
            (i) sole power to vote or to direct the vote 0
           (ii) shared power to vote or to direct the vote 1,532,700
          (iii) sole power to dispose or to direct the disposition of 0
           (iv) shared power to dispose or to direct the disposition
                of 1,532,700

ITEM 5.   OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS.
             Not applicable.

ITEM 6.   OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON.

     CLSP, CLSP II, CLSP/SBS I, and CLSP/SBS II are each private investment
partnerships, the sole general partner of which is Cooper, LLC. As the sole
general partner of CLSP, CLSP II, CLSP/SBS I, and CLSP/SBS II, Cooper, LLC has
the power to vote and dispose of the Securities owned by each of CLSP, CLSP II,
CLSP/SBS I, and CLSP/SBS II and, accordingly, may be deemed the "beneficial
owner" of such Securities. The managing member of Cooper, LLC is Jeffrey Casdin.

     Pursuant to an investment advisory contract, Cooper Hill Partners, L.P.
currently has the power to vote and dispose of the Securities held for the
account of CLSP Overseas, Ltd. and, accordingly, may be deemed the "beneficial
owner" of such Securities. Mr. Casdin is the managing member of Casdin Capital,
LLC, the general partner of Cooper Hill Partners, L.P.


ITEM  7.  IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED
          THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY. Not
          applicable.

ITEM 8.   IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP.
          See Item 6.

ITEM 9.   NOTICE OF DISSOLUTION OF GROUP.
          Not applicable.




Schedule 13G/A                                                 PAGE 14 OF 14

ITEM 10.  CERTIFICATION.  (if filing pursuant to Rule 13d-1(c))

     Each of the Reporting Persons and CLSP Overseas, Ltd. hereby make the
following certification:

     By signing below each Reporting Person certifies that, to the best of its
knowledge and belief, the securities referred to above were not acquired and are
not held for the purpose of or with the effect of changing or influencing the
control of the issuer of the Securities and were not acquired and not held in
connection with or as a participant in any transaction having that purpose or
effect.


                                   SIGNATURES

      After reasonable inquiry and to the best of our knowledge and belief, the
undersigned certify that the information set forth in this statement is true,
complete and correct.

DATED:  February 14, 2002           /s/ Jeffrey Casdin,
                                    JEFFREY CASDIN, individually, and
                                    as managing member of Cooper Hill
                                    Partners, LLC, and on behalf of CLSP,
                                    L.P., CLSP II, L.P., CLSP/SBS I, L.P.,
                                    and CLSP/SBS II, L.P. and as managing
                                    member of Casdin Capital, L.L.C., the
                                    general partner of Cooper Hill Partners,
                                    L.P.