Document:

<PAGE>

                                                                   Exhibit 10.17

                                 AMENDMENT NO. 1
                                     TO THE
                              INVESTORS' AGREEMENT

      This Amendment No. 1, dated as of May 14, 2000, effective as of January
21, 1998 (this "Amendment No. 1"), to the Investors' Agreement, dated as of
January 21, 1998, amended and restated as of March 29, 1999 (the "Investors'
Agreement"), among (i) Fisher Scientific International, Inc. (the "Company"),
(ii) Thomas H. Lee Equity Fund III, L.P. ("THL"), certain individuals
associated with THL listed on Schedule I attached hereto, THL-CCI Limited
Partnership ("THL- CCI"), THL Foreign Fund III, L.P. and THL FSI Equity
Investors, L.P. ("THL/FSI" and collectively with THL, the individuals listed
on Schedule I, THL-CCI, and THL Foreign Fund III, L.P., the "THL Entities"),
(iii) DLJ Merchant Banking Partners II, L.P. ("DLJMB"), DLJ Offshore Partners
II, C.V., DLJ Diversified Partners, L.P., DLJMB Funding II, Inc., DLJ
Merchant Banking Partners II - A, L.P., DLJ Diversified Partners - A, L.P.,
DLJ Millennium Partners, L.P., DLJ Millennium Partners - A, L.P., UK
Investment Plan 1997 Partners, DLJ EAB Partners, L.P., DLJ ESC II, L.P., and
DLJ First ESC, L.P. (collectively the "DLJ Entities"), (iv) Chase Equity
Associates, L.P. ("Chase Equity"), (v) Merrill Lynch KECALP L.P. 1997,
KECALP INC., and ML IBK Positions, Inc., (collectively, the "Merrill Lynch
Entities" and, together with each other entity listed in clauses (iii) and
(iv), the "Institutional Shareholders" and, collectively with (ii), the
"Equity Investors") and (vi) certain other Persons listed on the signature
pages hereof (including the trust pursuant to the Trust Agreement, dated of
even date herewith, between the Company and Mellon Bank, N.A., as trustee
(the "Rabbi Trust")) (the "Management Shareholders" and individually, along
with the THL Entities, DLJ Entities, Chase Equity, and Merrill Lynch
Entities, each a "Shareholder").

                              W I T N E S S E T H :

      WHEREAS, the parties hereto desire to amend the Investors' Agreement to
clarify the parties' intention with respect to certain management rights of the
THL Entities;

      WHEREAS, the parties had intended at the time of the execution of the
Investors' Agreement that THL/FSI would be entitled to nominate one of the four
directors to the Board that THL is entitled to nominate pursuant to Section 2.1
of the Investors' Agreement;

<PAGE>

      WHEREAS, pursuant to Section 7.4(a) of the Investors' Agreement, the Board
of Directors and the holders of at least 50% of the shares of Common Stock held
by the parties to the Investors' Agreement at the time of this Amendment No. 1
are required to approve this Amendment No. 1; and

      WHEREAS, terms used herein but not otherwise defined herein shall have the
respective meanings given such terms in the Investors' Agreement;

      NOW, THEREFORE, in consideration of the mutual promises and agreements
herein contained and other good and valuable consideration, the receipt of which
is hereby acknowledged, it is agreed by and between the parties hereto as
follows:

      1. The first sentence of Section 2.1 of the Investors' Agreement shall be
replaced in its entirety with the follow sentence:

      The Board shall consist of at least nine, but no more than ten, members
      (two of which shall be individuals which are not "Affiliates" or
      "Associates" (as those terms are used within the meaning Rule 12b-2 of the
      General Rules and Regulations under the Exchange Act) of any Shareholder
      or its Affiliates), of whom three shall be nominated by THL, one shall be
      nominated by THL/FSI, one shall be nominated by DLJMB, one shall be Paul
      M. Montrone and one shall be Paul M. Meister.

<PAGE>

      This Amendment No. 1 may be executed in counterparts, each of which shall
be deemed to be an original but all of which together shall constitute one and
the same instrument.

      IN WITNESS WHEREOF, the parties hereto have caused this Amendment No. 1 to
be duly executed by their respective authorized officers as of the day and year
first above written.

                              FISHER SCIENTIFIC INTERNATIONAL INC.

                              By: /s/ Todd M. DuChene
                                  ------------------------------------------
                                  Name:  Todd M. DuChene
                                  Title: Vice President, General Counsel and
                                         Secretary

<PAGE>

      THL Equity Shareholders:

                              THOMAS H. LEE EQUITY FUND III, L.P.

                              By:  THL Equity Advisors III Limited
                                    Partnership, as General Partner

                              By:  THL Equity Trust III,
                                    as General Partner

                              By: /s/ Wendy L. Masler
                                  ------------------------------------------
                                  Name:  Wendy L. Masler
                                  Title:

                              THOMAS H. LEE FOREIGN FUND III, L.P.

                              By:   THL Equity Advisors III Limited
                                    Partnership, as General Partner

                              By:   THL Equity Trust III,
                                    as General Partner

                              By: /s/ Wendy L. Masler
                                  ------------------------------------------
                                  Name:  Wendy L. Masler
                                  Title:

<PAGE>

                              THL FSI EQUITY INVESTORS, L.P.

                              By:   THL Equity Advisors III
                                    Limited Partnership,
                                    as General Partner

                              By:   THL Equity Trust III,
                                    as General Partner

                              By: /s/ Wendy L. Masler
                                  ------------------------------------------
                                  Name:  Wendy L. Masler
                                  Title:

                              THL-CCI LIMITED PARTNERSHIP

                              By:   THL Investment Management Corp.,
                                    as General Partner

                              By: /s/ Wendy L. Masler
                                  ------------------------------------------
                                  Name:  Wendy L. Masler
                                  Title:

<PAGE>

      Management Shareholders:

                                       By: /s/ Paul M. Montrone
                                           -----------------------
                                           Name: Paul M. Montrone

                                       By: /s/ Paul M. Meister
                                           -----------------------
                                           Name: Paul M. Meister

                                       By: /s/ Todd M. DuChene
                                           -----------------------
                                           Name: Todd M. DuChene

<PAGE>

      DLJ Entities' Shareholders:

                              DLJ MERCHANT BANKING PARTNERS II, L.P.

                              By:   DLJ Merchant Banking II, Inc.,
                                    as managing general partner

                              By:   /s/ Kirk B. Wortman
                                    ---------------------------------
                                    Name:  Kirk B. Wortman
                                    Title:

                              DLJ MERCHANT BANKING PARTNERS II-A, L.P.

                              By:   DLJ Merchant Banking II, Inc.,
                                    as managing general partner

                              By:   /s/ Kirk B. Wortman
                                    ---------------------------------
                                    Name:  Kirk B. Wortman
                                    Title:

                              DLJ OFFSHORE PARTNERS II, C.V.

                              By:   DLJ Merchant Banking II, Inc.,
                                    as advisory general partner

                              By:   /s/ Kirk B. Wortman
                                    ---------------------------------
                                    Name:  Kirk B. Wortman
                                    Title:

<PAGE>

                              DLJ DIVERSIFIED PARTNERS, L.P.

                              By:   DLJ Diversified Partners, Inc.,
                                    as managing general partner

                              By:   /s/ Kirk B. Wortman
                                    ---------------------------------
                                    Name:  Kirk B. Wortman
                                    Title:

                              DLJ DIVERSIFIED PARTNERS - A, L.P.

                              By:   DLJ Diversified Partners, Inc.,
                                    as managing general partner

                              By:   /s/ Kirk B. Wortman
                                    ---------------------------------
                                    Name:  Kirk B. Wortman
                                    Title:

                              DLJ MILLENNIUM PARTNERS, L.P.

                              By:   DLJ Merchant Banking II, Inc.,
                                    as managing general partner

                              By:   /s/ Kirk B. Wortman
                                    ---------------------------------
                                    Name:  Kirk B. Wortman
                                    Title:

<PAGE>

                              DLJ MILLENNIUM PARTNERS - A, L.P.

                              By:   DLJ Merchant Banking II, Inc.,
                                    as managing general partner

                              By:   /s/ Kirk B. Wortman
                                    ---------------------------------
                                    Name:  Kirk B. Wortman
                                    Title:

                              DLJMB FUNDING II, INC.

                              By:   /s/ Kirk B. Wortman
                                    ---------------------------------
                                    Name:  Kirk B. Wortman
                                    Title:

                              UK INVESTMENT PLAN 1997 PARTNERS

                              By:   Donaldson, Lufkin & Jenrette Inc.,
                                    as general partner

                              By:   /s/ Kirk B. Wortman
                                    ---------------------------------
                                    Name:  Kirk B. Wortman
                                    Title:

<PAGE>

                              DLJ EAB PARTNERS, L.P.

                              By:   DLJ LBO Plans Management Corporation,
                                    as managing general partner

                              By:   /s/ Kirk B. Wortman
                                    ---------------------------------
                                    Name:  Kirk B. Wortman
                                    Title:

                              DLJ ESC II, L.P.

                              By:   DLJ LBO Plans Management Corporation,
                                    as general partner

                              By:   /s/ Kirk B. Wortman
                                    ---------------------------------
                                    Name:  Kirk B. Wortman
                                    Title:

                              DLJ FIRST ESC, L.P.

                              By:   DLJ LBO Plans Management Corporation,
                                    as general partner

                              By:   /s/ Kirk B. Wortman
                                    ---------------------------------
                                    Name:  Kirk B. Wortman
                                    Title:

                                    The address for each of the DLJ Entities
                                    listed above is:

                                    c/o DLJ Merchant Banking II, Inc.
                                    277 Park Avenue
                                    New York, New York  10172
                                    Fax:  (212) 892-7272

<PAGE>

      Merrill Lynch Entities:

                              ML IBK POSITIONS, INC.

                              By:   /s/ Joseph S. Valenti
                                    ---------------------------------
                                    Name:  Joseph S. Valenti
                                    Title: Vice President

                              KECALP INC., as nominee for Merrill Lynch
                              KECALP International L.P. 1997

                              By:   /s/ Edward J. Higgins
                                    ---------------------------------
                                    Name:  Edward J. Higgins
                                    Title: Vice President

                              MERRILL LYNCH KECALP L.P. 1997

                              By:   KECALP Inc., as general partner

                              By:   /s/ Edward J. Higgins
                                    ---------------------------------
                                    Name:  Edward J. Higgins
                                    Title: Vice President

                                    The address for each of the Merrill Lynch
                                    Entities listed above is:

                                          225 Liberty Street, 31st Floor
                                          New York, NY  10080
                                          Fax:  (212) 236-3496

<PAGE>

      Individual Shareholders:

                              By:   /s/ David V. Harkins
                                    ---------------------------------
                                    Name:  David V. Harkins

                              By:   /s/ Sheryll J. Harkins
                                    ---------------------------------
                                    Name: The 1995 Harkins Gift Trust

                              By:   /s/ Thomas R. Shepherd
                                    ---------------------------------
                                    Name: Thomas R. Shepherd
                                          Money Purchase Pension Plan

                              By:   /s/ Scott A. Schoen
                                    ---------------------------------
                                    Name: Scott A. Schoen

                              By:   /s/ C. Hunter Boll
                                    ---------------------------------
                                    Name: C. Hunter Boll

                              By:   /s/ Scott M. Sperling
                                    ---------------------------------
                                    Name: Scott M. Sperling

                              By:   /s/ Scott M. Sperling
                                    ---------------------------------
                                    Name: Sperling Family Limited
                                          Partnership

                              By:   /s/ Anthony J. DiNovi
                                    ---------------------------------
                                    Name: Anthony J. DiNovi

                              By:   /s/ Thomas M. Hagerty
                                    ---------------------------------
                                    Name: Thomas M. Hagerty

<PAGE>

                              By:   /s/ Warren C. Smith, Jr.
                                    ---------------------------------
                                    Name: Warren C. Smith, Jr.

                              By:   /s/ Seth W. Lawry
                                    ---------------------------------
                                    Name: Seth W. Lawry

                              By:   /s/ Joseph J. Incandela
                                    ---------------------------------
                                    Name: Joseph J. Incandela

                              By:   /s/ Kent R. Weldon
                                    ---------------------------------
                                    Name: Kent R. Weldon

                              By:   /s/ Terrence M. Mullen
                                    ---------------------------------
                                    Name: Terrence M. Mullen

                              By:   /s/ Todd M. Abbrecht
                                    ---------------------------------
                                    Name: Todd M. Abbrecht

                              By:   /s/ Wendy L. Masler
                                    ---------------------------------
                                    Name: Wendy L. Masler

                              By:   /s/ Wendy L. Masler
                                    ----------------------------------
                                    Name:  THL-CCI Limited Partnership
                                    By:    Wendy L. Masler
                                    Title: Vice President

                              By:   /s/ Andrew D. Flaster
                                    ---------------------------------
                                    Name: Andrew D. Flaster

<PAGE>

                              By:
                                    ---------------------------------
                                    Name: First Trust Co. FBO
                                          Kristina A. Watts

                              By:   /s/ Charles Robins
                                    ---------------------------------
                                    Name: Charles Robins

                              By:   /s/ James Westra
                                    ---------------------------------
                                    Name: James Westra

                              By:   /s/ Charles A. Brizius
                                    ---------------------------------
                                    Name: Charles A. Brizius

<PAGE>

SCHEDULE I

CERTAIN NAMED INDIVIDUAL SHAREHOLDERS OF THL

David V. Harkins
The 1995 Harkins Gift Trust
Thomas R. Shepherd Money Purchase Pension Plan (Keogh)
Scott A. Schoen
C. Hunter Boll
Scott M. Sperling
Sperling Family Limited Partnership
Anthony J. DiNovi
Thomas M. Hagerty
Warren C. Smith, Jr.
Seth W. Lawry
Joseph J. Incandela
Kent R. Weldon
Terrence M. Mullen
Todd M. Abbrecht
Wendy L. Masler
Andrew D. Flaster
First Trust Co. FBO Kristina A. Watts
Charles W. Robins
James Westra
Charles A. Brizius<PAGE>

                                                                   Exhibit 10.18

                                             FOURTH AMENDMENT (this "Amendment")
                                    dated as of February 9, 2001 to the Credit
                                    Agreement dated as of January 21, 1998 (as
                                    previously amended, the "Credit Agreement"),
                                    among FISHER SCIENTIFIC INTERNATIONAL INC.
                                    (the "Company"), certain Subsidiaries of the
                                    Company, the lenders from time to time party
                                    thereto (the "Banks"), THE CHASE MANHATTAN
                                    BANK, as Administrative Agent, THE CHASE
                                    MANHATTAN BANK OF CANADA, as Canadian
                                    Administrative Agent, CHASE MANHATTAN
                                    INTERNATIONAL LIMITED, as U. K.
                                    Administrative Agent, MERRILL LYNCH CAPITAL
                                    CORPORATION, as Syndication Agent and DLJ
                                    CAPITAL FUNDING, INC. as Documentation
                                    Agent.

         A. Capitalized terms used and not otherwise defined herein shall have
the meanings assigned to them in the Credit Agreement.

         B. Pursuant to the Credit Agreement, the Banks have extended credit to
the Borrowers, and have agreed to extend credit to the Borrowers, in each case
pursuant to the terms and subject to the conditions set forth therein.

         C. The Company has requested that the Banks amend the Credit Agreement.

         D. The Required Banks are willing to agree to such amendment subject to
the terms and conditions set forth herein.

         Accordingly, the parties hereto agree as follows:

         SECTION 1. AMENDMENT. (a) Section 8.12 of the Credit Agreement is
amended by replacing the portion of the table included therein beginning with
(and including) the text "FQE1 2001" and ending with (and including) the text
"4.00:1.00" with the following text:

<PAGE>

<TABLE>
<S>                                              <C>
FQE1 2001                                        5.50:1.00
FQE2 2001                                        5.50:1.00
FQE3 2001                                        5.50:1.00
FYE  2001                                        5.50:1.00
FQE1 2002                                        5.00:1.00
FQE2 2002                                        5.00:1.00
FQE3 2002                                        5.00:1.00
FYE  2002                                        5.00:1.00
FQE1 2003                                        4.50:1.00
FQE2 2003                                        4.50:1.00
FQE3 2003                                        4.50:1.00
FYE  2003                                        4.50:1.00
FQE1 2004   and the last day of any              4.00:1.00
fiscal quarter thereafter
</TABLE>

         (b) The definition of the term "Consolidated EBIT" in Section 10 of the
Credit Agreement is amended by:

         (i) deleting the word "and" at the end of clause (v) thereof;

         (ii) inserting the following text immediately after clause (vi)
thereof:

         "and (vii) for all purposes of this Agreement other than calculating
the Leverage Ratio for purposes of (A) Section 3.01 and (B) determining the
Applicable Rate, without giving effect to nonrecurring cash charges incurred
after February 9, 2001 (in addition to those referred to in clauses (ii) and (v)
above) in an aggregate amount not to exceed $40,000,000 (for all periods
combined)"; and

         (iii) adding the following text at the end of such definition:

         "Solely for the purpose of calculating Consolidated EBIT for any Test
         Period when determining compliance with Section 8.12, (i) if at any
         time since the commencement of such Test Period the Company or any
         Subsidiary shall have made any Material Disposition, Consolidated EBIT
         for such Test Period shall be calculated after giving PRO FORMA effect
         thereto as if

<PAGE>

         such Material Disposition occurred on the first day of such Test Period
         and (ii) if at any time since the commencement of such Test Period the
         Company or any Subsidiary shall have made a Material Acquisition,
         Consolidated EBIT for such Test Period shall be calculated after giving
         PRO FORMA effect thereto as if such Material Acquisition occurred on
         the first day of such Test Period. As used in this definition,
         "Material Acquisition" means any acquisition of property or series of
         related acquisitions of property that (x) involves consideration by the
         Company and its subsidiaries in excess of $5,000,000 and (y) is a
         Permitted Acquisition; and "Material Disposition" means any disposition
         of property or series of related dispositions of property that (x)
         yields consideration to the Company or any of its subsidiaries in
         excess of $5,000,000 and (y) is permitted under Section 8.02 hereof.
         Each certificate delivered pursuant to Section 7.01(c) shall include in
         the calculations of the Leverage Ratio set forth in such certificate a
         reasonably detailed calculation of all PRO FORMA adjustments made for
         purposes of calculating Consolidated EBIT to give effect to Material
         Acquisitions and Material Dispositions."

         SECTION 2. REPRESENTATIONS AND Warranties. Each of the Borrowers hereby
represents and warrants to each Bank, on and as of the date hereof, that:

         (a) This Amendment has been duly authorized, executed and delivered by
each Borrower, and each of this Amendment and the Credit Agreement as amended by
this Amendment constitutes a legal, valid and binding obligation of each
Borrower, enforceable in accordance with its terms, except to the extent that
the enforceability thereof may be limited by applicable bankruptcy, insolvency,
reorganization, moratorium or similar laws generally affecting creditors' rights
and by equitable principles (regardless of whether enforcement is sought in
equity or at law).

         (b) The representations and warranties of the Borrowers contained in
the Credit Agreement are true and

<PAGE>

correct in all material respects on and as of the date hereof.

         (c) After giving effect to this Amendment, no Default has occurred and
is continuing.

         SECTION 3. EFFECTIVENESS. This Amendment shall become effective on the
date (the "Amendment Effective Date") that each of the following conditions is
met:

         (a) The Administrative Agent shall have received counterparts hereof
signed by each Borrower and the Required Banks.

         (b) Each Bank that executes this Amendment at or prior to noon, New
York time, on February 9, 2001, shall have received an Amendment Fee equal to
0.125% of the aggregate amount of such Bank's Loans and outstanding Commitments
under the Credit Agreement.

         (c) The Administrative Agent shall have received interest, fees and
other amounts due and payable under this Amendment and the Credit Agreement
on or prior to the Amendment Effective Date including, to the extent
invoiced, all reasonable out of pocket costs and expenses of the
Administrative Agent (including, without limitation, the reasonable fees of
Cravath, Swaine & Moore, counsel for the Administrative Agent).

         SECTION 4. EXPENSES. The Company acknowledges that Section 12.01 of the
Credit Agreement applies to this Amendment and hereby agrees to pay all
out-of-pocket expenses reasonably incurred by the Administrative Agent,
including the reasonable fees, charges and disbursements of Cravath, Swaine &
Moore, counsel for the Administrative Agent, in connection with the preparation,
execution and delivery of this Amendment.

         SECTION 5. MISCELLANEOUS. (a) This Amendment constitutes the entire
agreement and understanding of the parties with respect to the subject matter
hereof and supersedes any and all prior agreements and understandings, oral or
written, relating to the subject matter hereof.

         (b) Section headings used herein are for convenience of reference only
and are not to affect the

<PAGE>

construction of, or to be taken into consideration in interpreting, this
Amendment.

         (c) THIS AMENDMENT SHALL BE CONSTRUED IN ACCORDANCE WITH AND GOVERNED
BY THE LAW OF THE STATE OF NEW YORK.

         (d) Each reference to a party hereto shall be deemed to include its
successors and assigns, all of whom shall be bound by this Amendment and to
whose benefit the provisions of this Amendment shall inure.

         (e) This Amendment may be executed in any number of counterparts, each
of which shall be an original but all of which, when taken together, shall
constitute but one instrument.

         (f) Except as specifically amended or modified hereby, the Credit
Agreement shall continue in full force and effect in accordance with the
provisions thereof.

<PAGE>

            IN WITNESS WHEREOF, the parties hereto have caused this Amendment to
be duly executed by their respective authorized officers as of the date first
above written.

                                    FISHER SCIENTIFIC
                                    INTERNATIONAL INC.,

                                    By: /s/ Todd Duchene
                                        ----------------------------------
                                        Name: Todd Duchene
                                        Title:  General Counsel

                                    FISHER SCIENTIFIC U.K., LIMITED,

                                    By: /s/ Todd Duchene
                                        ----------------------------------
                                        Name: Todd Duchene
                                        Title: General Counsel

                                    FISHER SCIENTIFIC LIMITED,

                                    By: /s/ Todd Duchene
                                        ----------------------------------
                                        Name: Todd Duchene
                                        Title: General Counsel

                                    ACROS ORGANICS N.V.,

                                    By: /s/ Todd Duchene
                                        ----------------------------------
                                        Name: Todd Duchene
                                        Title: General Counsel

<PAGE>

                                    FISHER SCIENTIFIC S.A.,

                                    By: /s/ Todd Duchene
                                        ----------------------------------
                                        Name: Todd Duchene
                                        Title: General Counsel

                                    FISHER SCIENTIFIC GmbH,

                                    By: /s/ Todd Duchene
                                        ----------------------------------
                                        Name: Todd Duchene
                                        Title: General Counsel

                                    FISHER SCIENTIFIC KOREA LTD.,

                                    By: /s/ Todd Duchene
                                        ----------------------------------
                                        Name: Todd Duchene
                                        Title: General Counsel

                                    FISHER SCIENTIFIC B.V.,

                                    By: /s/ Todd Duchene
                                        ----------------------------------
                                        Name: Todd Duchene
                                        Title: General Counsel

                                    CASA ROCAS S.A. DE C.V.,

                                    By: /s/ Todd Duchene
                                        ----------------------------------
                                        Name: Todd Duchene
                                        Title: General Counsel

                                    FISHER GENETICS ASIA  Pte Ltd.,

                                    By: /s/ Todd Duchene
                                        ----------------------------------
                                        Name: Todd Duchene
                                        Title: General Counsel

                                    FISHER SCIENTIFIC Pte Ltd.,

                                    By: /s/ Todd Duchene
                                        ----------------------------------
                                        Name: Todd Duchene
                                        Title: General Counsel

<PAGE>

                                    WINIGER AG,

                                    By: /s/ Todd Duchene
                                        ----------------------------------
                                        Name: Todd Duchene
                                        Title: General Counsel

<PAGE>

                                    THE CHASE MANHATTAN BANK, as
                                    Administrative Agent and as a
                                    Bank,

                                    By: /s/ Stacey Haimes
                                        ----------------------------------
                                        Name: Stacey Haimes
                                        Title: Vice President

                                    MERRILL LYNCH CAPITAL
                                    CORPORATION, as Syndication
                                    Agent and as a Bank,

                                    By:
                                        ----------------------------------
                                        Name:
                                        Title:

                                    DLJ CAPITAL FUNDING, INC., as
                                    Documentation Agent and as a
                                    Bank,

                                    By:
                                        ----------------------------------
                                        Name:
                                        Title:

<PAGE>

                                    ABN AMRO BANK N.V.,

                                    By: /s/ Richard Dacosta
                                        ----------------------------------
                                        Name:  Richard DaCosta
                                        Title: Group Vice President

                                    By: /s/ David A. Carroll
                                        ----------------------------------
                                        Name:  David A.  Carroll
                                        Title: Assistant Vice
                                               President

<PAGE>

                                    ALLIANCE CAPITAL FUNDING,
                                    L.L.C,

                                    By: /s/ Joel Serebransky
                                        ----------------------------------
                                        Name:  Joel Serebransky
                                        Title: Senior Vice
                                               President

<PAGE>

                                    ALLIANCE INVESTMENTS LIMITED

                                    By: /s/ Joel Serebransky
                                        ----------------------------------
                                        Name: Joel Serebransky
                                        Title: Senior Vice
                                               President

<PAGE>

                                    ARCHIMEDES FUNDING II, LTD.,
                                    By:    ING Capital Advisors
                                           LLC, as Collateral Manager

                                    By: /s/ Jonathan S. David
                                        ----------------------------------
                                        Name: Jonathan S. David
                                        Title: Vice President

<PAGE>

                                    BANKBOSTON, N.A.,

                                    By:
                                        ----------------------------------
                                        Name:
                                        Title:

<PAGE>

                                    BANK OF AMERICA, N.A.,

                                    By:
                                        ----------------------------------
                                        Name:
                                        Title:

<PAGE>

                                    THE BANK OF NOVA SCOTIA,

                                    By: /s/ T.M. Pitcher
                                        ----------------------------------
                                        Name:  T.M. Pitcher
                                        Title: Authorized Signatory

<PAGE>

                                    BANK OF TOKYO-MITSUBISHI TRUST CO.,

                                    By: /s/ Chris Broussiotis
                                        ----------------------------------
                                        Name: Chris Broussiotis
                                        Title: Vice President

<PAGE>

                                    BANK ONE, N.A.
                                        (Main Office: Chicago),

                                    By:
                                        ----------------------------------
                                        Name:
                                        Title:

                                    BNP PARIBAS,
                                    as Co-Agent,

                                    By: /s/ Stephanie Rogers
                                        ----------------------------------
                                        Name: Stephanie Rogers
                                        Title: Vice President

                                    By: /s/ Duane P. Hekowski
                                        ----------------------------------
                                        Name: Duane P. Hekowski
                                        Title: Director

<PAGE>

                                    BHF (USA) CAPITAL CORPORATION,

                                    By: /s/ Hans J. Schotz
                                        ----------------------------------
                                        Name: Hans J. Schotz
                                        Title: Vice President

                                    By: /s/ John J. D'Angelo
                                        ----------------------------------
                                        Name: John J. D'Angelo
                                        Title: Vice President
                                               Asset Management

<PAGE>

                                    BALANCED HIGH YIELD FUND I
                                    LTD.,

                                    By:    BHF (USA) Capital
                                           Corporation
                                           as Attorney-in-Fact

                                    By: /s/ Hans J. Schotz
                                        ----------------------------------
                                        Name: Hans J. Schotz
                                        Title: Vice President

                                    By: /s/ John J. D'Angelo
                                        ----------------------------------
                                        Name: John J. D'Angelo
                                        Title: Vice President

<PAGE>

                                    BALANCED HIGH YIELD FUND II
                                    LTD.,

                                    By:    (USA) Capital Corporation

                                    By: /s/ Hans J. Schotz
                                        ----------------------------------
                                        Name: Hans J. Schotz
                                        Title:  Vice President

                                    By: /s/ John J. D'Angelo
                                        ----------------------------------
                                        Name: John J. D'Angelo
                                        Title: Vice President
                                               Asset Management

<PAGE>

                                    BANKERS TRUST COMPANY,

                                    By: /s/ Scottye D. Lindsey
                                        ----------------------------------
                                        Name: Scottye D. Lindsey
                                        Title: Vice President

<PAGE>

                                    CAPTIVA III FINANCE, LTD.,
                                    as advised by Pacific
                                    Investment Management
                                    Company LLC

                                    By: /s/ David Dyer
                                        ----------------------------------
                                        Name: David Dyer
                                        Title: Director

<PAGE>

                                    CHASE SECURITIES INC., as
                                    Agent for THE CHASE MANHATTAN
                                    BANK,

                                    By: /s/ J. Matthew Lyness
                                        ----------------------------------
                                        Name: J. Matthew Lyness
                                        Title: Managing Director

<PAGE>

                                    CIBC, INC.,
                                    BY:    CIBC World Markets
                                           Corp.,
                                           as Agent,

                                    By: /s/ Stephanie E. DeVane
                                        ----------------------------------
                                        Name: Stephanie E. DeVane
                                        Title: Executive Director

<PAGE>

                                    CITY NATIONAL BANK,

                                    By:
                                        ----------------------------------
                                        Name:
                                        Title:

<PAGE>

                                    CONTINENTAL ASSURANCE
                                    COMPANY,

                                    By: /s/ Mark L. Gold
                                        ----------------------------------
                                        Name: Mark L. Gold
                                        Title: Managing Director

<PAGE>

                                    CREDIT INDUSTRIEL ET
                                    COMMERCIAL,

                                    By: /s/ Anthony Rock
                                        ----------------------------------
                                        Name: Anthony Rock
                                        Title: Vice President

                                    By: /s/ Marcus Edward
                                        ----------------------------------
                                        Name: Marcus Edward
                                        Title: Vice President

<PAGE>

                                    CREDIT SUISSE FIRST BOSTON,

                                    By:
                                        ----------------------------------
                                        Name:
                                        Title:

<PAGE>

                                    THE DAI-ICHI KANGYO BANK,
                                    LIMITED,

                                    By:
                                        ----------------------------------
                                        Name:
                                        Title:

<PAGE>

                                    ELC (CAYMAN) LTD.,

                                    By: /s/ Joseph H. Towell
                                        ----------------------------------
                                        Name: Joseph H. Towell
                                        Title: Senior Vice
                                               President

<PAGE>

                                    EATON VANCE INSTITUTIONAL
                                    SENIOR LOAN FUND,
                                    By:    Eaton Vance Management
                                           as Investment Advisor

                                    By: /s/ Payson F. Swaffield
                                        ----------------------------------
                                        Name: Payson F. Swaffield
                                        Title: Vice President

<PAGE>

                                    EATON VANCE SENIOR INCOME
                                    TRUST,

                                    By:    Eaton Vance Management
                                           as Investment Advisor,

                                        By: /s/ Payson F. Swaffield
                                        ----------------------------------
                                        Name: Payson F. Swaffield
                                        Title: Vice President

<PAGE>

                                    ERSTE BANK,

                                    By: /s/ Rima Terradista
                                        ----------------------------------
                                        Name: Rima Terradista
                                        Title: Vice President

                                    By: /s/ John S. Runnion
                                        ----------------------------------
                                        Name: John S. Runnion
                                        Title: Managing Director

<PAGE>

                                    FIRSTRUST BANK,

                                    By: /s/ Kent D. Nelson
                                        ----------------------------------
                                        Name: Kent D. Nelson
                                        Title: Vive President and
                                               Manager

<PAGE>

                                    FLEET NATIONAL BANK,

                                    By: /s/ Christopher J. Wickles
                                        ----------------------------------
                                        Name: Christopher J. Wickles
                                        Title: Vice President

<PAGE>

                                    Franklin CLO I, Limited

                                    By: /s/ Chauncey Lufkin
                                        ----------------------------------
                                        Name: Chauncey Lufkin
                                        Title: Vice President

<PAGE>

                                    FRANKLIN FLOATING RATE TRUST,

                                    By: /s/ Chauncey Lufkin
                                        ----------------------------------
                                        Name: Chauncey Lufkin
                                        Title: Vice President

<PAGE>

                                    GALAXY CLO 1999-1, LTD.,

                                    By:    SAI Investment Advisor,
                                           Inc.,
                                           as its Collateral Manager

                                    By: /s/ Thomas G. Brandt
                                        ----------------------------------
                                        Name: Thomas G. Brandt
                                        Title: Authorized Agent

<PAGE>

                                    GENERAL ELECTRIC CAPITAL
                                    CORPORATION.,

                                    By: /s/ Gregory Hong
                                        ----------------------------------
                                        Name: Gregory Hong
                                        Title: Duly Authorized
                                               Signatory

<PAGE>

                                    GRAYSON & CO.,

                                    By: /s/ Payson F. Swaffield
                                        ----------------------------------
                                        Name: Payson F. Swaffield
                                        Title: Vice President

<PAGE>

                                    HSBC BANK USA,

                                    By: /s/ Thomas J. Crowley
                                        ----------------------------------
                                        Name: Thomas J. Crowley
                                        Title: Vice President

<PAGE>

                                    INDOSUEZ CAPITAL FUNDING IV,
                                    L.P.,

                                    By: /s/ Melissa Marano
                                        ----------------------------------
                                        Name: Melissa Marano
                                        Title: Vice President

<PAGE>

                                    THE INDUSTRIAL BANK OF JAPAN
                                    LIMITED,

                                    By: /s/ J. Kenneth Biegen
                                        ----------------------------------
                                        Name: J. Kenneth Biegen
                                        Title: Senior Vice
                                               President

<PAGE>

                                    PPM AMERICA,INC., as attorney
                                    in fact, on behalf of
                                    JACKSON NATIONAL LIFE
                                    INSURANCE CO.,

                                    By: /s/ John Walding
                                        ----------------------------------
                                        Name: John Walding
                                        Title: Managing Director

<PAGE>

                                    KZH CNC LLC,

                                    By: /s/ Kimberly Rowe
                                        ----------------------------------
                                        Name: Kimberly Rowe
                                        Title: Authorized Agent

<PAGE>

                                    KZH CRESCENT LLC,

                                    By: /s/ Kimberly Rowe
                                        ----------------------------------
                                        Name: Kimberly Rowe
                                        Title: Authorized Agent

<PAGE>

                                    KZH CRESCENT-2 LLC,

                                    By: /s/ Kimberly Rowe
                                        ----------------------------------
                                        Name: Kimberly Rowe
                                        Title: Authorized Agent

<PAGE>

                                    KZH CYPRESSTREE-1 LLC,

                                    By: /s/ Kimberly Rowe
                                        ----------------------------------
                                        Name: Kimberly Rowe
                                        Title: Authorized Agent

<PAGE>

                                    KZH LANGDALE LLC,

                                    By: /s/ Kimberly Rowe
                                        ----------------------------------
                                        Name: Kimberly Rowe
                                        Title: Authorized Agent

<PAGE>

                                    KZH ING-2 LLC,

                                    By: /s/ Kimberly Rowe
                                        ----------------------------------
                                        Name: Kimberly Rowe
                                        Title: Authorized Agent

<PAGE>

                                    MELLON BANK, N.A.,

                                    By: /s/ Alexandra M. Dulchinos
                                        ----------------------------------
                                        Name: Alexandra M. Dulchinos
                                        Title: Vice President

<PAGE>

                                    MERRILL LYNCH CAPITAL CORPORATION,

                                    By: /s/ PAUL FOX
                                        ----------------------------------
                                        Name: Paul Fox
                                        Title: Vice President

<PAGE>

                                    MITSUBISHI TRUST & BANKING CORP.,

                                    By:  /s/ Toshihiro Hayashi
                                        ----------------------------------
                                        Name: Toshihiro Hayashi
                                        Title: Senior Vice
                                               President

<PAGE>

                                    ML CLO XV PILGRIM AMER (CAYMAN) LTD.,

                                    By:    Pilgrim Investments,
                                           Inc. as its Investment
                                           Manager,

                                    By: /s/ Mark F. Haak
                                        ----------------------------------
                                        Name: Mark F. Haak
                                        Title: Assistant Vice
                                               President

<PAGE>

                                    NATEXIS BANQUE POPULAIRES,

                                    By: /s/ Gary Kania
                                        ----------------------------------
                                        Name: Gary Kania
                                        Title: Vice President

                                    By: /s/ Jordan Levy
                                        ----------------------------------
                                        Name: Jordan Levy
                                        Title: Associate

<PAGE>

                                    NEW YORK LIFE INSURANCE
                                    COMPANY,

                                    By: /s/ David Melka
                                        ----------------------------------
                                        Name: David Melka
                                        Title: Second Vice
                                               President

<PAGE>

                                    NEW YORK LIFE INSURANCE
                                    AND ANNUITY CORPORATION,

                                    By:    New York Life Insurance
                                           Management, LLC,
                                           as Investment Manager

                                    By: /s/ F. David Melka
                                        ----------------------------------
                                        Name: F. David Melka
                                        Title: F. David Melka

<PAGE>

                                    OXFORD STRATEGIC INCOME FUND,

                                    By: /s/ Payson F. Swaffield
                                        ----------------------------------
                                        Name: Payson F. Swaffield
                                        Title: Vice President

<PAGE>

                                    PILGRIM AMER. HIGH INCOME
                                    INVEST. LTD.,

                                    By: /s/ Mark F. Haak
                                        ----------------------------------
                                        Name: Mark F. Haak
                                        Title: Assistant Vice
                                               President

<PAGE>

                                    PILGRIM CLO 1999-1 LTD.,

                                    By: /s/ Mark F. Haak
                                        ----------------------------------
                                        Name: Mark F. Haak
                                        Title: Assistant Vice
                                               President

<PAGE>

                                    SENIOR DEBT PORTFOLIO,

                                    By: /s/ Payson F. Swaffield
                                        ----------------------------------
                                        Name: Payson F. Swaffield
                                        Title: Vice President

<PAGE>

                                    SEQUILS I, LTD.,

                                    By: /s/ Mark Gold
                                        ----------------------------------
                                        Name: Mark Gold
                                        Title: Managing Director

<PAGE>

                                    THE SUMITOMO BANK, LIMITED
                                    NEW YORK BRANCH,

                                    By: /s/ Suresh S. Tata
                                        ----------------------------------
                                        Name: Suresh S. Tata
                                        Title: Senior Vice
                                               President

<PAGE>

                                    VAN KAMPEN CLO I, LIMITED,

                                    By: /s/ Douglas L. Winchell
                                        ----------------------------------
                                        Name: Douglas L. Winchell
                                        Title: Vice President

<PAGE>

                                    VAN KAMPEN PRIME RATE INCOME
                                    TRUST,

                                    By: /s/ Douglas L. Winchell
                                        ----------------------------------
                                        Name: Douglas L. Winchell
                                        Title: Vice President

<PAGE>

                                    WINGED FOOT FUNDING TRUST,

                                    By: /s/ Ann E. Morris
                                        ----------------------------------
                                        Name: Ann E. Morris
                                        Title: Authorized Agent

<PAGE>

                                    TORONTO DOMINION BANK,

                                    By:
                                        ----------------------------------
                                        Name:
                                        Title:

<PAGE>

                                    THE CHASE MANHATTAN BANK OF
                                    CANADA,

                                    By: /s/ Christine Chan
                                        ----------------------------------
                                        Name: Christine Chan
                                        Title: Vice President

                                    By: /s/ Drew Mcdonald
                                        ----------------------------------
                                        Name: Drew McDonald
                                        Title: Vice President

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