Document:

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                                                                   Exhibit 10.25

                                FOURTH AMENDMENT
                         TO CERTAIN OPERATIVE AGREEMENTS

     THIS FOURTH AMENDMENT TO CERTAIN OPERATIVE AGREEMENTS, dated as of November
15, 2004 (this "Fourth Amendment"), is entered into by and among WEST FACILITIES
CORPORATION, a Delaware corporation (the "Lessee"), WEST CORPORATION, a Delaware
corporation ("West Corp."), and the various entities which are parties to the
Participation Agreement (hereinafter defined) from time to time as guarantors
(individually, a "Guarantor" and collectively, the "Guarantors"), WACHOVIA
DEVELOPMENT CORPORATION, a North Carolina corporation (the "Borrower" or the
"Lessor"); the various banks and other lending institutions which are parties to
the Participation Agreement from time to time as lenders (subject to the
definition of Lenders in Appendix A to the Participation Agreement,
individually, a "Lender" and collectively, the "Lenders"); and WACHOVIA BANK,
NATIONAL ASSOCIATION, a national banking association, as the agent for the
Primary Financing Parties and respecting the Security Documents, as the agent
for the Secured Parties (in such capacity, the "Agent"). Capitalized terms used
but not otherwise defined in this Fourth Amendment shall have the meanings set
forth in Appendix A to the Participation Agreement, and the rules of usage set
forth in Appendix A to the Participation Agreement shall apply herein.

                                   WITNESSETH

     WHEREAS, the parties to this Amendment are parties to that certain
Participation Agreement dated as of May 9, 2003, as amended by the First
Amendment to Certain Operative Agreements and Waiver dated as of October 31,
2003 and as further amended by the Second Amendment to Certain Operative
Agreements dated as of January 22, 2004 (as amended, modified, supplemented or
restated from time to time, the "Participation Agreement").

     WHEREAS, the Lessee and the Lessor are parties to that certain Amended and
Restated Lease Agreement dated as of May 9, 2003, as amended by the Third
Amendment to Certain Operative Agreements dated as of August 9, 2004 (as
amended, modified, supplemented or restated from time to time, the "Lease" or
"Lease Agreement").

     WHEREAS, the parties to this Fourth Amendment have agreed to the amendments
set forth herein, subject to the terms and conditions set forth herein.

     NOW, THEREFORE, IN CONSIDERATION of the premises and other good and
valuable consideration, the receipt and sufficiency of which is hereby
acknowledged, the parties hereto agree as follows:

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                                    SECTION 1
                                   AMENDMENTS

     1.1 Amendment to Section 5.6 of the Participation Agreement.  Section 5.6
of the Participation Agreement is hereby deleted in its entirety and replaced by
the following:

          5.6  SPECIAL PROVISION REGARDING CREDIT PARTIES.

          It is the express intent of each of the parties hereto that the group
     of Credit Parties under the Operative Agreements and the group consisting
     of the borrower and guarantors under the Guarantor Credit Agreement contain
     the same members in each group while the facilities contemplated by the
     Operative Agreements and the GCA Credit Documents are outstanding. As a
     result, certain Subsidiaries of the Credit Parties will join the Operative
     Agreements from time to time in accordance with Section 8A.10 and pursuant
     to this Section 5.6 certain of the Credit Parties (other than the Parent
     and the Lessee) may be released from the Operative Agreements pursuant to
     the terms and conditions set forth in this Section 5.6. Provided no Lease
     Default, Lease Event of Default or Guaranty Event of Default has occurred
     and is continuing, if (a) the Guarantor Credit Agreement is terminated and
     not replaced by any other facility and so long as none of the Parent, the
     Lessee or any other Subsidiary, direct or indirect, of the Parent has
     outstanding any Indebtedness or any facility with commitments to provide
     Indebtedness in excess of one hundred fifty million dollars ($150,000,000)
     (other than the amounts outstanding pursuant to the Operative Agreements
     and subordinated Indebtedness, which shall be expressly subordinated, to
     the satisfaction of the Primary Financing Parties, to the transactions and
     payment of the Credit Party obligations contemplated by the Operative
     Agreements) or (b) the GCA Lenders release any GCA Credit Party other than
     the Parent or the Lessee from all of the GCA Credit Party Obligations, all
     of such GCA Credit Party's obligations owing to the GCA Lenders in the GCA
     Credit Documents, all GCA Liens on any property or interest of any GCA
     Credit Party in favor or for the benefit of the GCA Lenders and the
     Guarantor Credit Agreement have not been terminated, restated or replaced,
     then, with respect to (a) above, upon written request of the Parent and the
     Lessee or with respect to (b) above, upon the later of (y) the
     effectiveness of such release under the Guarantor Credit Agreement and (z)
     delivery to the Agent, for the benefit of the Primary Financing Parties, of
     the same consideration and benefit including without limitation, amendments
     or modifications to the GCA Credit Documents or otherwise (including
     without limitation restatement or replacement facilities) which are
     favorable to the GCA Lenders, fees, increased pricing or other amounts paid
     to the GCA Lenders or collateral pledged to or for the benefit of the GCA
     Lenders; then such Credit Parties (in all cases other than the Parent and
     the Lessee) shall be deemed released from the Guaranteed Obligations under
     the Operative Agreements and the Financing Parties shall upon written
     request of the Parent and the Lessee provide written confirmation of such
     release in form and substance acceptable to such Financing Parties.
     Immediately upon such release, such released Credit Party shall no longer
     be a Credit Party to the Operative Agreements and all provisions related to
     the Credit Parties shall, from and after the

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     effectiveness of such release, no longer include such released party. In
     the case of (a), above, in addition to the release of the applicable Credit
     Parties, the covenants in Section 8B shall no longer apply (provided, terms
     defined therein or sections referenced in other provisions shall continue)
     to any Credit Party after such time, provided, the Parent, the Lessee and
     their Subsidiaries do not have any Indebtedness in excess of one hundred
     fifty million dollars ($150,000,000) (other than the amounts outstanding
     pursuant to the Operative Agreements and subordinated Indebtedness, which
     shall be expressly subordinated, to the satisfaction of the Primary
     Financing Parties, to the transactions and payment of the Credit Party
     obligations contemplated by the Operative Agreements) outstanding at any
     time during the Term. In the event the Parent, the Lessee or any of their
     Subsidiaries has any Indebtedness in excess of one hundred fifty million
     dollars ($150,000,000) (other than the amounts outstanding pursuant to the
     Operative Agreements and subordinated Indebtedness, which shall be
     expressly subordinated, to the satisfaction of the Primary Financing
     Parties, to the transactions and payment of the Credit Party obligations
     contemplated by the Operative Agreements) outstanding during the Term, then
     Section 8B of the Participation Agreement shall automatically be reinstated
     and such provisions shall have full force and effect from such date through
     the Expiration Date and the Parent and the Lessee shall promptly, but in
     any event within thirty (30) days of incurring such Indebtedness, cause
     each of the parties which were previously Credit Parties (or their
     successors) to join the Operative Agreements as Guarantors and provide an
     executed Joinder Agreement from each such party and other documentation as
     reasonably requested by any Primary Financing Party (including without
     limitation documents executed by each Credit Party satisfactory to the
     Primary Financing Parties evidencing the reinstatement of Section 8B of the
     Participation Agreement, provided, such Section 8B shall be automatically
     reinstated regardless of whether such documents are executed).
     Notwithstanding the foregoing, no Property, Collateral, Security Document,
     other Operative Agreement or any other Credit Party (except, with respect
     to other Credit Parties, as expressly provided herein) shall be released
     hereby and such released Credit Parties shall not be released from: (aa)
     any obligations which were due and owing prior to the effectiveness of such
     release, (bb) any of the indemnity provisions of the Operative Agreements,
     including without limitation Section 11 of the Participation Agreement or
     (cc) any other provision of any Operative Agreement which by its terms
     continues after the release of a Credit Party or after the termination of
     the Operative Agreements.

     1.2 Amendment to Section 5.7 of the Participation Agreement.  Section 5.7
of the Participation Agreement is hereby deleted in its entirety and replaced by
the following:

          5.7  SPECIAL PROVISION REGARDING REPLACEMENT OF LENDERS.

          In the event a Lender does not consent to (or is deemed to have
     rejected) a Renewal Term proposed by Lessee in accordance with Section 2.2
     of the Lease, opposes or fails to respond to any amendment, change or
     waiver with respect to any Operative Agreements, which is requested by the
     Lessee and approved by the Super Majority Financing Parties, or becomes
     affected by any changes or events described in Sections 11.3(a) or (b) and
     petitions the Lessee for any increased costs or amounts

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     thereunder (which increased costs or amounts are paid by the Lessee), the
     Lessee shall have the right to replace such a Lender as a party to this
     Agreement and the other relevant Operative Agreements, the Lessee may, upon
     notice to such Lender and the Agent, replace such Lender by causing such
     Lender to assign its Lender Commitment, if any, and its Loan (with the
     assignment fee to be paid by the Lessee in such instance) pursuant to
     Section 10 hereof and Sections 9.7 and 9.8 of the Credit Agreement and the
     other applicable terms and conditions in the Operative Agreements to one or
     more other Lenders or eligible assignees procured by the Lessee. To the
     extent not paid by the replacement Lender, the Lessee shall (a) pay in full
     all principal, interest, fees and other amounts owing to such Lender
     through the date of replacement, (b) provide appropriate assurances and
     indemnities as each replaced Lender may reasonably require with respect to
     the Operative Agreements, and (c) release such Lender from its obligations
     under the Operative Agreements, other than pursuant to Section 12.13. Any
     Lender being replaced and the replacement Lenders shall execute and deliver
     an Assignment and Acceptance in the form of Exhibit B to the Credit
     Agreement and take actions to comply with Section 10 hereof and Sections
     9.7 and 9.8 of the Credit Agreement and the other applicable terms and
     conditions in the Operative Agreements.

     1.3 Addition of Section 8.14 to the Participation Agreement.  The
Participation Agreement is hereby amended by adding Section 8.14 thereto as
follows:

          8.14. COORDINATED VOTING MECHANICS REGARDING GCA CREDIT DOCUMENTS AND
               OPERATIVE AGREEMENTS.

          To the extent any party to this Agreement (or any Affiliate of any
     such party) (a) approves in writing a waiver, amendment or other
     modification to a provision set forth in a GCA Credit Document that is
     substantively identical to a provision set forth in an Operative Agreement,
     then the applicable party to this Agreement shall automatically be deemed
     to have voted in favor of the requested waiver, amendment or other
     modification regarding such corresponding provision in such Operative
     Agreement without the need for the applicable party to this Agreement to
     execute a separate written instrument to such effect and (b) disapproves in
     writing a waiver, amendment or other modification to a provision set forth
     in a GCA Credit Document that is substantively identical to a provision set
     forth in an Operative Agreement, then the applicable party to this
     Agreement shall automatically be deemed to have voted against the requested
     waiver, amendment or other modification regarding such corresponding
     provision in such Operative Agreement without the need for the applicable
     party to this Agreement to execute a separate written instrument to such
     effect.

     1.4 Amendment to Sections 8A and 8B to the Participation Agreement.
Sections 8A and 8B of the Participation Agreement are hereby deleted in their
entirety and replaced by the following:

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             SECTION 8A. AFFIRMATIVE COVENANTS OF THE CREDIT PARTIES

          The Credit Parties hereby covenant and agree that on the Initial
     Closing Date, and thereafter for so long as any Operative Agreement is in
     effect and until the Commitments have terminated, the Loans and the Lessor
     Advances are paid in full, all amounts accrued or due and owing from any
     Credit Party pursuant to any Operative Agreement have been paid in full and
     the Liens evidenced by the Security Documents have been released, each
     Credit Party shall, and shall cause each of the GCA Subsidiaries (other
     than in the case of Sections 8A.1, 8A.2 or 8A.7 hereof), to:

          8A.1. FINANCIAL STATEMENTS.

          Furnish to the Agent and each of the Primary Financing Parties:

               (a) As soon as available, but in any event within ninety (90)
          days after the end of each fiscal year of the Parent, a copy of the
          consolidated balance sheet of the Parent and its Consolidated
          Subsidiaries as at the end of such fiscal year and the related
          consolidated and consolidating statements of income and retained
          earnings and of consolidated cash flows of the Parent and its
          Consolidated Subsidiaries for such year which, other than in the case
          of the consolidating statements, shall be audited by a firm of
          independent certified public accountants of nationally recognized
          standing reasonably acceptable to the Primary Financing Parties,
          setting forth in each case in comparative form the figures for the
          previous year, reported on without a "going concern" or like
          qualification or exception, or qualification indicating that the scope
          of the audit was inadequate to permit such independent certified
          public accountants to certify such financial statements without such
          qualification;

               (b) As soon as available and in any event within forty-five (45)
          days after the end of each of the first three fiscal quarters of the
          Parent, a copy of the unaudited consolidated balance sheet of the
          Parent and its Consolidated Subsidiaries as at the end of such period
          and related consolidated and consolidating statements of income and
          retained earnings and of consolidated cash flows for the Parent and
          its Consolidated Subsidiaries for such quarterly period and for the
          portion of the fiscal year ending with such period, in each case
          setting forth in comparative form consolidated figures for the
          corresponding period or periods of the preceding fiscal year (subject
          to normal recurring year-end audit adjustments); and

               (c) As soon as available, but in any event within fifteen (15)
          days prior to the end of each fiscal year, a copy of the detailed
          annual operating budget or plan including cash flow projections of the
          Parent and its GCA Subsidiaries for the next four fiscal quarter
          period prepared on a quarterly basis, in form and detail reasonably
          acceptable to the Agent and the Primary Financing Parties, together
          with a summary of the material assumptions made in the preparation of
          such annual budget or plan;

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     all such financial statements to be complete and correct in all material
     respects (subject, in the case of interim statements, to normal recurring
     year-end audit adjustments) and to be prepared in reasonable detail and, in
     the case of the annual and quarterly financial statements provided in
     accordance with subsections (a) and (b) above, in accordance with GAAP
     applied consistently throughout the periods reflected therein and further
     accompanied by a description of, and an estimation of the effect on the
     financial statements on account of, a change, if any, in the application of
     accounting principles as provided in Section (n) of the rules of usage in
     Appendix A hereto.

          8A.2. CERTIFICATES; OTHER INFORMATION.

          Furnish to the Agent and each of the Primary Financing Parties:

               (a) concurrently with the delivery of the financial statements
          referred to in Section 8A.1 above, a certificate of the independent
          certified public accountants reporting on such financial statements
          stating that in making the examination necessary therefor no knowledge
          was obtained of any Default or Event of Default, except as specified
          in such certificate;

               (b) concurrently with the delivery of the financial statements
          referred to in Sections 8A.1(a) and 8A.1(b) above, a certificate of a
          Responsible Officer stating that, to the best of such Responsible
          Officer's knowledge, each of the GCA Credit Parties during such period
          observed or performed in all material respects all of its covenants
          and other agreements, and satisfied in all material respects every
          condition, contained in the Operative Agreements to be observed,
          performed or satisfied by it, and that such Responsible Officer has
          obtained no knowledge of any Default or Event of Default except as
          specified in such certificate and such certificate shall include the
          calculations in reasonable detail required to indicate compliance with
          Section 8A.9 as of the last day of such period;

               (c) within thirty (30) days after the same are provided, make
          available by electronic mail or by posting to the Parent's website
          copies of all reports (other than those otherwise provided pursuant to
          Section 8A.1 and those which are of a promotional nature) and other
          financial information which the Parent sends to its stockholders;

               (d) within ninety (90) days after the end of each fiscal year of
          the Parent, a certificate containing information regarding the amount
          of all (i) Debt Issuances outstanding at the end of the prior fiscal
          year and (ii) Equity Issuances that were made during the prior fiscal
          year;

               (e) promptly upon receipt thereof, a copy of any other report or
          "management letter" submitted by independent accountants to the Parent
          or any of

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          its GCA Subsidiaries in connection with any annual, interim or special
          audit of the books of such Person; and

               (f) promptly, such other documents or other information as the
          Agent, on behalf of any Primary Financing Party, may from time to time
          reasonably request.

          8A.3. PAYMENT OF OBLIGATIONS.

               (a) Perform all of its obligations under each contract to which
          it is a party, if a failure to so perform could reasonably be expected
          to have a GCA Material Adverse Effect.

               (b) Pay and perform all of its obligations under the Operative
          Agreements and pay and perform (i) all taxes, assessments and other
          governmental charges that may be levied or assessed upon it or any GCA
          Property, which if not paid or performed could reasonably be expected
          to have a GCA Material Adverse Effect and (ii) all other indebtedness,
          obligations and liabilities in accordance with customary trade
          practices, which if not paid would have a GCA Material Adverse Effect;
          provided that it may contest any tax, assessment or other governmental
          charge in good faith so long as adequate reserves are maintained with
          respect thereto in accordance with GAAP.

          8A.4. CONDUCT OF BUSINESS AND MAINTENANCE OF EXISTENCE.

          Preserve and maintain its corporate existence and all rights,
     franchises, licenses and privileges necessary to the conduct of its
     business, and qualify and remain qualified as a foreign corporation (or
     partnership, limited liability company or other such similar entity, as the
     case may be) and authorized to do business in each jurisdiction in which
     the failure to so qualify could reasonably be expected to have a GCA
     Material Adverse Effect and shall maintain all licenses, permits and
     registrations necessary for the conduct of its operations.

          8A.5. MAINTENANCE OF GCA PROPERTY; INSURANCE.

               (a) Keep all material property useful and necessary in its
          business in good working order and condition (ordinary wear and tear
          and obsolescence excepted); and

               (b) Maintain with financially sound and reputable insurance
          companies insurance on all its material property in at least such
          amounts and against at least such risks as are usually insured against
          in the same general area by companies engaged in the same or a similar
          business; and furnish to the Agent, upon written request, full
          information as to the insurance carried; provided, however, that the
          Parent and the GCA Subsidiaries may maintain self insurance

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          plans (including wholly-owned captive insurance company coverage) to
          the extent companies of similar size and in similar businesses do so.

          8A.6. INSPECTION OF PROPERTY; BOOKS AND RECORDS; DISCUSSIONS.

          Keep proper books of records and account in which full, true and
     correct entries in conformity with GAAP and all Requirements of Law shall
     be made of all dealings and transactions in relation to its businesses and
     activities; and permit, subject to the confidentiality provisions of
     Section 12.13, upon at least five (5) Business Days notice from the Agent
     (or, if a Default or Event of Default shall have occurred and be
     continuing, upon at least one (1) Business Days notice from the Agent),
     representatives of the Agent or any Primary Financing Party, from time to
     time, to visit and inspect its properties and to inspect, audit and make
     extracts from its books, records and files, including without limitation
     management letters prepared by independent accountants and to discuss with
     its principal officers, and its independent accountants, its business,
     assets, liabilities, financial condition, results of operations and
     business prospects.

          8A.7. NOTICES.

          Give notice in writing to the Agent (which shall promptly transmit
     such notice to each Primary Financing Party) of:

               (a) promptly, but in any event within two (2) Business Days after
          the Parent knows or has reason to know thereof, the occurrence of any
          Default or Event of Default;

               (b) promptly and in any event within five (5) Business Days after
          the Parent knows or has reason to know thereof, the commencement of
          any (i) Material Proceeding, (ii) loss of or damage to any assets of
          the Parent or any GCA Subsidiary that likely will result in a GCA
          Material Adverse Effect and (iii) in addition other notice provisions
          in the Operative Agreements regarding environmental matters,
          litigation, investigation or proceeding involving an environmental
          claim or potential liability under Environmental Laws in excess of
          $10,000,000;

               (c) promptly and in any event within five (5) Business Days after
          the Parent knows or has reason to know thereof, default by Parent or
          any GCA Subsidiary under any note, indenture, loan agreement, mortgage
          or other similar agreement to which the Parent or any GCA Subsidiary
          is a party or by which the Parent or any GCA Subsidiary is bound,
          which relates to borrowed money, or of any other default under any
          other note, indenture, loan agreement, mortgage or other similar
          agreement to which the Parent or any GCA Subsidiary is a party or by
          which the Parent or any GCA Subsidiary is bound if such other default
          may result in a GCA Material Adverse Effect;

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               (d) promptly and in any event within thirty (30) days after the
          Parent knows or has reason to know thereof: (i) the occurrence or
          expected occurrence of any material Reportable Event with respect to
          any Plan, a failure to make any required contribution to a Plan, the
          creation of any GCA Lien in favor of the PBGC (other than a GCA
          Permitted Lien) or a Plan or any withdrawal from, or the termination,
          Reorganization or Insolvency of, any Multiemployer Plan or (ii) the
          institution of proceedings or the taking of any other action by the
          PBGC or the Parent or any Commonly Controlled Entity or any
          Multiemployer Plan with respect to the withdrawal from, or the
          terminating, Reorganization or Insolvency of, any Plan; and

               (e) promptly and in any event within three (3) Business Days
          after the Parent knows or has reason to know thereof, any other
          development or event which could reasonably be expected to have a GCA
          Material Adverse Effect.

     Each notice pursuant to this Section shall be accompanied by a statement of
     a Responsible Officer setting forth details of the occurrence referred to
     therein and stating what action the Parent proposes to take with respect
     thereto. In the case of any notice of a Default or Event of Default, the
     Parent shall specify that such notice is a Default or Event of Default
     notice on the face thereof.

          8A.8. ENVIRONMENTAL LAWS.

               (a) Comply in all material respects with, and ensure compliance
          in all material respects by all tenants and subtenants, if any, with,
          all applicable Environmental Laws and obtain and comply in all
          material respects with and maintain, and ensure that all tenants and
          subtenants obtain and comply in all material respects with and
          maintain, any and all licenses, approvals, notifications,
          registrations or permits required by applicable Environmental Laws
          except to the extent that failure to do so could not reasonably be
          expected to have a GCA Material Adverse Effect;

               (b) Conduct and complete all investigations, studies, sampling
          and testing, and all remedial, removal and other actions required
          under Environmental Laws and promptly comply in all material respects
          with all lawful orders and directives of all Governmental Authorities
          regarding Environmental Laws except to the extent that the same are
          being contested in good faith by appropriate proceedings and the
          pendency of such proceedings could not reasonably be expected to have
          a GCA Material Adverse Effect; and

               (c) Defend, indemnify and hold harmless the Agent and the Primary
          Financing Parties, and their respective employees, agents, officers
          and directors, from and against any and all claims, demands,
          penalties, fines, liabilities, settlements, damages, costs and
          expenses of whatever kind or nature known or unknown, contingent or
          otherwise, arising out of, or in any way relating to the violation of,
          noncompliance with or liability under, any Environmental Law

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          applicable to the operations of the Parent, any of the GCA
          Subsidiaries or the GCA Properties, or any orders, requirements or
          demands of Governmental Authorities related thereto, including,
          without limitation, reasonable attorney's and consultant's fees,
          investigation and laboratory fees, response costs, court costs and
          litigation expenses, except to the extent that any of the foregoing
          arise out of the gross negligence or willful misconduct of the party
          seeking indemnification therefor. The agreements in this paragraph
          shall survive repayment of the Notes, Lessor Advances and all other
          amounts payable under the Operative Agreements.

          8A.9. FINANCIAL COVENANTS.

          Commencing on the day immediately following the Closing Date, the
     Credit Parties shall comply with the following financial covenants:

               (a) The Consolidated Leverage Ratio, as of the last day of each
          fiscal quarter of the Consolidated Group shall be less than or equal
          to 2.5 to 1.0.

               (b) The Consolidated Fixed Charge Coverage Ratio, as of the last
          day of each fiscal quarter of the Consolidated Group shall be greater
          than or equal to 1.2 to 1.0.

          Notwithstanding anything herein to the contrary, the parties hereto
     acknowledge and agree that, for purposes of all calculations made in
     determining compliance for any applicable period with the financial
     covenants set forth in this Section 8A.9, (i) after consummation of any
     Permitted Acquisition, (A) income statement items and other balance sheet
     items (whether positive or negative) attributable to the Target acquired in
     such transaction shall be included in such calculations to the extent
     relating to such applicable period, subject to adjustments acceptable to
     the Agent in its sole discretion, and (B) Indebtedness of a Target which is
     retired in connection with a Permitted Acquisition shall be excluded from
     such calculations and deemed to have been retired as of the first day of
     such applicable period and (ii) after consummation of any disposition of
     GCA Property permitted by Section 8B.4(a)(i), (ii) and (v), (A) income
     statement items and other balance sheet items (whether positive or
     negative) attributable to the GCA Property disposed of shall be excluded in
     such calculations to the extent relating to such applicable period, subject
     to adjustments acceptable to the Agent in its sole discretion, and (B)
     Indebtedness of the Target which is retired in connection with such Asset
     Disposition shall be excluded from such calculations and deemed to have
     been retired as of the first day of such applicable period.

          8A.10. ADDITIONAL SUBSIDIARY GUARANTORS.

          The Credit Parties will cause each Material Domestic GCA Subsidiary
     (excluding Worldwide Asset Purchasing, LLC), whether newly formed, after
     acquired or otherwise existing, to promptly (but in any event within
     fifteen (15) Business Days) become a Guarantor hereunder by way of
     execution of a Joinder Agreement.

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          8A.11. COMPLIANCE WITH LAW.

          To the extent failure to do so would have a GCA Material Adverse
     Effect, each Credit Party will, and will cause each of its GCA Subsidiaries
     to (a) observe and remain in compliance with all applicable Requirements of
     Law and maintain in full force and effect all permits, authorizations,
     registrations and consents from any Governmental Authority, in each case
     applicable to the conduct of its business, and (b) keep in full force and
     effect all licenses, certifications or accreditations necessary for any GCA
     Property to carry on its business.

              SECTION 8B. NEGATIVE COVENANTS OF THE CREDIT PARTIES

          The Credit Parties hereby covenant and agree that on the Closing Date,
     and thereafter for so long as any Operative Agreement is in effect and
     until the Commitments have terminated, the Loans and the Lessor Advances
     are paid in full, all amounts accrued or due and owing from any Credit
     Party pursuant to any Operative Agreements have been paid in full and the
     Liens evidenced by the Security Documents have been released, that:

          SECTION 8B.1 INDEBTEDNESS.

          The Parent will not, nor will it permit any GCA Subsidiary to,
     contract, create, incur, assume or permit to exist any Indebtedness,
     except:

               (a) Indebtedness arising or existing under the Guarantor Credit
          Agreement and the other GCA Credit Documents;

               (b) Indebtedness of the Parent and the GCA Subsidiaries existing
          as of the Closing Date as referenced in the financial statements
          referenced in Section 6.3(a) (and set out more specifically in
          Schedule 6) hereto and renewals, refinancings or extensions thereof in
          a principal amount not in excess of that outstanding as of the date of
          such renewal, refinancing or extension;

               (c) Indebtedness of the Parent and the GCA Subsidiaries incurred
          after the Closing Date consisting of Capital Leases or Indebtedness
          incurred to provide all or a portion of the purchase price or cost of
          construction of an asset provided that (i) such Indebtedness when
          incurred shall not exceed the purchase price or cost of construction
          of such asset; (ii) no such Indebtedness shall be refinanced for a
          principal amount in excess of the principal balance outstanding
          thereon at the time of such refinancing; and (iii) the total principal
          amount of all such Indebtedness shall not exceed $25,000,000 at any
          time outstanding;

               (d) Unsecured intercompany Indebtedness (i) among the GCA Credit
          Parties, (ii) among Foreign GCA Subsidiaries, (iii) owing from
          Domestic GCA Subsidiaries of the Parent that are not guarantors under
          the Guarantor Credit Agreement to Credit Parties, which Indebtedness
          is solely for the purpose of

                                       11

<PAGE>

          purchasing third party debt obligations; provided that the aggregate
          principal amount of Indebtedness incurred pursuant to this clause
          (iii), together with the aggregate amount of Investments and loans
          made pursuant to clause (iv) of the definition of Permitted
          Investments, shall not exceed $100,000,000 at any time outstanding,
          and (iv) owing from GCA Subsidiaries of the Parent that are not
          guarantors under the Guarantor Credit Agreement to Credit Parties
          (other than Indebtedness incurred pursuant to clause (iii) above);
          provided that the aggregate principal amount of Indebtedness incurred
          pursuant to this clause (iv), together with the aggregate amount of
          Investments and loans made pursuant to clause (v) of the definition of
          Permitted Investments, shall not exceed $50,000,000 at any time
          outstanding;

               (e) Secured intercompany Indebtedness among the Parent and the
          GCA Subsidiaries in a principal amount not to exceed $50,000,000 in
          the aggregate at any time outstanding; provided that, to the extent a
          Credit Party and a Subsidiary that is not a Credit Party are parties
          to such intercompany Indebtedness arrangement, such Credit Party shall
          be the secured party;

               (f) Indebtedness and obligations owing under Hedging Agreements
          relating to the loans pursuant to the Guarantor Credit Agreement and
          other Hedging Agreements entered into in order to manage existing or
          anticipated interest rate, exchange rate or commodity price risks and
          not for speculative purposes;

               (g) Indebtedness and obligations of GCA Credit Parties owing
          under documentary letters of credit for the purchase of goods or other
          merchandise (but not under standby, direct pay or other letters of
          credit except for the letters of credit under the Guarantor Credit
          Agreement) generally in an aggregate principal amount not to exceed
          $25,000,000 at any time outstanding;

               (h) Guaranty Obligations in respect of Indebtedness of a GCA
          Credit Party to the extent such Indebtedness is permitted to exist or
          be incurred pursuant to this Section 8B.1;

               (i) Indebtedness of the Parent and the GCA Subsidiaries arising
          under any Synthetic Leases (other than Indebtedness under the
          Operative Agreements set out on Schedule 6) that is pari passu with or
          subordinated to the GCA Credit Party Obligations in a principal amount
          not to exceed $40,500,000 in the aggregate at any time outstanding;

               (j) Indebtedness of the Parent and the GCA Subsidiaries
          consisting of unsecured earnout obligations incurred in connection
          with Permitted Acquisitions in a principal amount not to exceed
          $50,000,000 in the aggregate at any time outstanding;

                                       12

<PAGE>

               (k) Indebtedness (other than revolving credit facilities
          exceeding $50,000,000 in the aggregate and any Synthetic Leases) of
          the Parent and the GCA Subsidiaries that is pari passu with or
          subordinated to the GCA Credit Party Obligations in an aggregate
          principal amount not to exceed $400,000,000 at any time outstanding;

               (l) Indebtedness of the Parent and the GCA Subsidiaries relating
          to any accounts receivable securitization transaction or transactions;
          provided that the principal amount of such Indebtedness does not
          exceed $100,000,000 in the aggregate at any time outstanding; and

               (m) other Indebtedness of the Parent and the GCA Subsidiaries;
          provided that such Indebtedness is non-recourse to the Parent or any
          of the GCA Subsidiaries and the principal amount of such Indebtedness
          does not exceed $150,000,000 in the aggregate at any time outstanding.

          8B.2. GCA LIENS.

          The Parent will not, nor will it permit any GCA Subsidiary to,
     contract, create, incur, assume or permit to exist any GCA Lien with
     respect to any of its property or assets of any kind (whether real or
     personal, tangible or intangible), whether now owned or hereafter acquired,
     except for GCA Permitted Liens.

          8B.3. NATURE OF BUSINESS.

          The Parent will not, nor will it permit any GCA Subsidiary to, alter
     the character of its business in any material respect from that conducted
     as of the Closing Date.

          8B.4. CONSOLIDATION, MERGER, SALE OR PURCHASE OF ASSETS, ETC.

          The Parent will not, nor will it permit any GCA Subsidiary to,

               (a) dissolve, liquidate or wind up its affairs, sell, transfer,
          lease or otherwise dispose of its property or assets or agree to do so
          at a future time except the following, without duplication, shall be
          expressly permitted:

                    (i) Specified Sales;

                    (ii) the sale, transfer, lease or other disposition of
               property or assets (A) to an unrelated party not in the ordinary
               course of business (other than Specified Sales), where and to the
               extent that they are the result of a Recovery Event or (B) the
               sale, lease, transfer or other disposition of machinery, parts
               and equipment no longer used or useful in the conduct of the
               business of the Parent or any of the GCA Subsidiaries, as
               appropriate, in its reasonable discretion, so long as and the net
               proceeds therefrom are used to repair or replace damaged property
               or to purchase or

                                       13

<PAGE>

               otherwise acquire new assets or property, provided that such
               purchase or acquisition is committed to within 180 days of
               receipt of the net proceeds and such purchase or acquisition is
               consummated within 270 days of receipt of such proceeds;

                    (iii) the sale, lease or transfer of property or assets (at
               fair market value) from the Parent to any other GCA Credit Party;

                    (iv) the sale, lease or transfer of property or assets from
               a Credit Party other than the Parent to another Credit Party;

                    (v) the sale, lease or transfer of property or assets (at
               fair market value) not to exceed $50,000,000 in the aggregate in
               any fiscal year; and

                    (vi) the sale, transfer, contribution, conveyance or other
               disposition of accounts receivable and associated collateral,
               lockbox and other collection accounts, records and/or proceeds in
               connection with any accounts receivable securitization,
               non-recourse indebtedness or any Purchase Paper Facility; or

               (b) (i) purchase, lease or otherwise acquire (in a single
          transaction or a series of related transactions) the GCA Property or
          assets of any Person (other than purchases or other acquisitions of
          inventory, leases, materials, GCA Property and equipment in the
          ordinary course of business, except as otherwise limited or prohibited
          herein) or (ii) enter into any transaction of merger or consolidation,
          except for (A) Investments or acquisitions (including Permitted
          Acquisitions) permitted pursuant to Section 8B.5, and (B) the merger
          or consolidation of a GCA Credit Party or other GCA Subsidiary with
          and into another GCA Credit Party, provided that if the Parent is a
          party thereto, the Parent will be the surviving corporation.

          8B.5. ADVANCES, INVESTMENTS AND LOANS.

          The Parent will not, nor will it permit any GCA Subsidiary to, lend
     money or extend credit or make advances to any Person, or purchase or
     acquire any stock, obligations or securities of, or any other interest in,
     or make any capital contribution to, any Person except for Permitted
     Investments or to the extent permitted by Section 8B.1.

          8B.6. TRANSACTIONS WITH GCA AFFILIATES.

          The Parent will not, nor will it permit any GCA Subsidiary to, enter
     into any transaction or series of transactions, whether or not in the
     ordinary course of business, with any officer, director, shareholder or GCA
     Affiliate other than on terms and conditions substantially as favorable as
     would be obtainable in a comparable

                                       14

<PAGE>

     arm's-length transaction with a Person other than an officer, director,
     shareholder or GCA Affiliate.

          8B.7. OWNERSHIP OF SUBSIDIARIES; RESTRICTIONS.

          The Parent will not sell, transfer, pledge or otherwise dispose of any
     Capital Stock or other equity interests in any of the GCA Subsidiaries, nor
     will it permit any of the GCA Subsidiaries to issue, sell, transfer, pledge
     or otherwise dispose of any of their Capital Stock or other equity
     interests, except in connection with any Purchase Paper Facility or any
     other transaction or series of transactions permitted by Section 8B.4. The
     Parent shall not, and shall not permit any of the GCA Subsidiaries to,
     amend, modify or change its shareholders' agreements and other
     equity-related documents (excluding amendments to stock option plan
     documents and employee stock incentive documents) in any material respect
     without the prior written consent of the Primary Financing Parties.

          8B.8. FISCAL YEAR; ORGANIZATIONAL DOCUMENTS; MATERIAL AGREEMENTS.

          The Parent will not, nor will it permit any of the GCA Subsidiaries
     to, change their fiscal year. The Parent will not, nor will it permit any
     GCA Subsidiary to, amend, modify or change their articles of incorporation
     (or corporate charter or other similar organizational document) or bylaws
     (or other similar document) in any material respect or in any respect
     adverse to the interests of the Primary Financing Parties without the prior
     written consent of the Primary Financing Parties. The Parent will not, nor
     will it permit any of the GCA Subsidiaries to, without the prior written
     consent of the Agent and the Primary Financing Parties, amend, modify,
     cancel or terminate or fail to renew or extend or permit the amendment,
     modification, cancellation or termination by the Parent or any of the GCA
     Subsidiaries of any of the Material Agreements, except in the event that
     such amendments, modifications, cancellations or terminations could not
     reasonably be expected to have a GCA Material Adverse Effect.

          8B.9. LIMITATION ON RESTRICTED ACTIONS.

          The Parent will not, nor will it permit any GCA Subsidiary to,
     directly or indirectly, create or otherwise cause or suffer to exist or
     become effective any encumbrance or restriction on the ability of any such
     Person to (a) pay dividends or make any other distributions to any Credit
     Party on its Capital Stock or with respect to any other interest or
     participation in, or measured by, its profits, (b) pay any Indebtedness or
     other obligation owed to any Credit Party, (c) make loans or advances to
     any Credit Party, (d) sell, lease or transfer any of its GCA Properties or
     assets to any Credit Party, or (e) act as a Parent and pledge its assets
     pursuant to the Operative Agreements or any renewals, refinancings,
     exchanges, refundings or extension thereof, except (in respect of any of
     the matters referred to in clauses (a)-(d) above) for such encumbrances or
     restrictions existing under or by reason of (i) this Participation
     Agreement and the other Operative Agreements, (ii) applicable law, (iii)
     any document or instrument governing Indebtedness incurred pursuant to
     Section 8B.1(c), provided that any such restriction contained therein
     relates only to the asset or assets constructed or acquired in connection

                                       15

<PAGE>

     therewith or (iv) any GCA Permitted Lien or any document or instrument
     governing any GCA Permitted Lien, provided that any such restriction
     contained therein relates only to the asset or assets subject to such GCA
     Permitted Lien.

          8B.10. RESTRICTED PAYMENTS.

          Each of the GCA Credit Parties will not, nor will it permit any GCA
     Subsidiary to, directly or indirectly, declare, order, make or set apart
     any sum for or pay any Restricted Payment, except (a) to make dividends
     payable solely in the common stock or equivalent equity interests of such
     Person, (b) to make dividends or other distributions payable to the Parent
     or any wholly owned GCA Subsidiary of the Parent that is a Credit Party
     (directly or indirectly through GCA Subsidiaries) and (c) to make dividends
     or other distributions payable to any minority equity owner of a GCA
     Subsidiary in an aggregate amount not to exceed such minority equity
     owner's equity interest in earnings for the current fiscal year and
     undistributed earnings from prior fiscal years.

          8B.11. PREPAYMENTS OF SUBORDINATED INDEBTEDNESS, ETC.

          Except in connection with a Purchase Paper Facility, the Parent will
     not, nor will it permit any GCA Subsidiary to, after the issuance thereof,
     amend or modify (or permit the amendment or modification of) any of the
     terms of any Subordinated Debt if such amendment or modification would add
     or change any terms in a manner adverse to the interests of the Primary
     Financing Parties or the issuer of such Subordinated Debt, or shorten the
     final maturity or average life to maturity or require any payment to be
     made sooner than originally scheduled or increase the interest rate
     applicable thereto or change any subordination provision thereof.

          8B.12. SALE LEASEBACKS.

          The Parent will not, nor will it permit any GCA Subsidiary to,
     directly or indirectly, become or remain liable as lessee or as guarantor
     or other surety with respect to any lease, whether an operating lease or a
     Capital Lease, of any GCA Property (whether real, personal or mixed),
     whether now owned or hereafter acquired in excess of $10,000,000 in the
     aggregate on an annual basis, (a) which the Parent or any GCA Subsidiary
     has sold or transferred or is to sell or transfer to a Person which is not
     the Parent or any GCA Subsidiary or (b) which the Parent or any GCA
     Subsidiary intends to use for substantially the same purpose as any other
     GCA Property which has been sold or is to be sold or transferred by the
     Parent or any GCA Subsidiary to another Person which is not the Parent or
     any GCA Subsidiary in connection with such lease.

          8B.13. NO FURTHER NEGATIVE PLEDGES.

          The Parent will not, nor will it permit any GCA Subsidiary to, enter
     into, assume or become subject to any agreement prohibiting or otherwise
     restricting the creation or assumption of any GCA Lien upon its GCA
     Properties or assets, whether now owned or hereafter acquired, or requiring
     the grant of any security for such obligation if security is

                                       16

<PAGE>

     given for some other obligation, except (a) pursuant to this Participation
     Agreement and the other Operative Agreements, (b) pursuant to any document
     or instrument governing Indebtedness incurred pursuant to Section 8B.1(c),
     provided that any such restriction contained therein relates only to the
     asset or assets constructed or acquired in connection therewith and (c) in
     connection with any GCA Permitted Lien or any document or instrument
     governing any GCA Permitted Lien, provided that any such restriction
     contained therein relates only to the asset or assets subject to such GCA
     Permitted Lien.

     1.5 Amendment to Sections 11.3(a) and (b) of the Participation Agreement.
Sections 11.3(a) and 11.3(b) of the Participation Agreement are hereby deleted
in their entirety and replaced with the following:

          (a) If, due to either (i) the introduction of or any change in or in
     the interpretation of any law or regulation or (ii) the compliance with any
     guideline or request hereafter adopted, promulgated or made by any central
     bank or other governmental authority (whether or not having the force of
     law), there shall be any increase in the cost to any Financing Party of
     agreeing to make or making, funding or maintaining Advances, then the
     Lessee shall from time to time, upon demand by such Financing Party (with a
     copy of such demand to the Agent but subject to the terms of Section 2.11
     of the Credit Agreement), pay to the Agent for the account of such
     Financing Party additional amounts sufficient to compensate such Financing
     Party for such increased cost; provided, that such Financing Party shall
     not be permitted to request such compensation from the Lessee if more than
     one hundred twenty (120) days have elapsed after the applicable event
     described in (i) or (ii) above. A certificate as to the amount of such
     increased cost, submitted to the Lessee and the Agent by such Financing
     Party, shall be conclusive and binding for all purposes, absent manifest
     error; provided, that upon request, the Lessee shall be entitled to review
     and verify non-confidential information of any Financing Party related to
     the determination as set forth in the certificate and discuss such
     non-confidential information of any Financing Party related to any such
     determination with such Financing Party.

          (b) If any Financing Party determines that compliance with any law or
     regulation or any guideline or request from any central bank or other
     governmental authority (whether or not having the force of law, but in each
     case promulgated or made after the date hereof) affects or would affect the
     amount of capital required or expected to be maintained by such Financing
     Party or any corporation controlling such Financing Party and that the
     amount of such capital is increased by or based upon the existence of such
     Financing Party's commitment to make Advances and other commitments of this
     type or upon the Advances, then, within fifteen (15) days after demand by
     such Financing Party (with a copy of such demand to the Agent but subject
     to the terms of Section 2.11 of the Credit Agreement), the Lessee shall pay
     to the Agent for the account of such Financing Party, from time to time as
     specified by such Financing Party, additional amounts sufficient to
     compensate such Financing Party or such corporation in the light of such
     circumstances, to the extent that such Financing Party reasonably
     determines such increase in capital to be allocable to the existence of
     such Financing Party's commitment to make such Advances; provided, that
     such Financing Party shall not be permitted to

                                       17

<PAGE>

     request such compensation from the Lessee if more than one hundred twenty
     (120) days have elapsed after such adoption of or change in the law,
     regulation or guideline. A certificate as to such amounts submitted to the
     Lessee and the Agent by such Financing Party shall be conclusive and
     binding for all purposes, absent manifest error; provided, that upon
     request, the Lessee shall be entitled to review and verify non-confidential
     information of any Financing Party related to the determination as set
     forth in the certificate and discuss such non-confidential information of
     any Financing Party related to any such determination with such Financing
     Party.

     1.6 Amendment to Schedules to the Participation Agreement.  Schedules 1
through 6 to the Participation Agreement are hereby deleted in their entirety
and replaced with Schedules 1 through 6 attached to this Fourth Amendment.

     1.7 Amendment to Exhibit G to the Participation Agreement.  Exhibit G to
the Participation Agreement is hereby deleted in its entirety and replaced with
Exhibit 1 attached to this Fourth Amendment.

     1.8 Deletions of Items from Section 3 of the Guaranty.  Sections 3(i)(I)
and 3(i)(V) are hereby deleted in their entirety from the Guaranty.

     1.9 Replacement of Certain Existing Definitions in Appendix A to the
Participation Agreement.  The following definitions are hereby deleted in their
entirety from Appendix A to the Participation Agreement and replaced with the
following:

          "Aggregate Revolving Committed Amount" shall mean four hundred million
     dollars ($400,000,000), as such amount may be increased or reduced from
     time to time as provided in Sections 2.2, 2.6 or such other applicable
     sections of the Guarantor Credit Agreement.

          "Applicable Percentage" shall mean, for any day, the rate per annum
     set forth below opposite the applicable level then in effect:

<TABLE>
<CAPTION>
                           Applicable
                         Percentage for        Applicable           Applicable           Applicable
                       Eurodollar Lessor     Percentage for     Percentage for ABR     Percentage for
                       Advances in excess   Eurodollar Lessor   Lessor Advances in       ABR Lessor
                          of 12% of the      Advances not in     excess of 12% of     Advances not in
                       aggregate Property   excess of 12% of       the aggregate      excess of 12% of
        Consolidated      Cost for all        the aggregate      Property Cost for     the aggregate
          Leverage       Properties and     Property Cost for   all Properties and   Property Cost for
Level      Ratio        Eurodollar Loans     all Properties          ABR Loans         all Properties
-----   ------------   ------------------   -----------------   ------------------   -----------------
<S>     <C>            <C>                  <C>                 <C>                  <C>
  I        < 0.50x           75 bps              125 bps               0 bps               50 bps
  II    => 0.50x but        87.5 bps            137.5 bps              0 bps               50 bps
           < 1.00x
 III    => 1.00x but         100 bps             150 bps               0 bps               50 bps
           < 1.50x
  IV      => 1.50x           125 bps             175 bps              25 bps               75 bps
</TABLE>

          The Applicable Percentage shall be determined and adjusted quarterly
     on the date five (5) Business Days after the date on which the Agent has
     received from the Parent the

                                       18

<PAGE>

     quarterly financial information and certifications required to be delivered
     to the Agent and the Primary Financing Parties in accordance with the
     provisions of Sections 8A.1(b) and 8A.2(b) pursuant to which the Parent
     notifies the Agent of a change in the applicable pricing level based on the
     financial information contained therein (each an "Interest Determination
     Date"). Such Applicable Percentage shall be effective from such Interest
     Determination Date until the next such Interest Determination Date. If the
     Parent shall fail to provide the quarterly financial information and
     certifications in accordance with the provisions of Sections 8A.1(b) and
     8A.2(b), the Applicable Percentage from such Interest Determination Date
     shall, on the date five (5) Business Days after the date by which the
     Parent was so required to provide such financial information and
     certifications to the Agent and the Primary Financing Parties, be based on
     Level IV until such time as such information and certifications are
     provided, whereupon the Level shall be determined by the then current
     Consolidated Leverage Ratio.

          "Arranger" shall mean Wachovia Capital Markets, LLC.

          "Change of Control" shall mean any Person or two or more Persons
     acting in concert (other than members of the West Family Group) shall have
     acquired "beneficial ownership," directly or indirectly, of, or shall have
     acquired by contract or otherwise, or shall have entered into a contract or
     arrangement that, upon consummation, will result in its or their
     acquisition of, or control over, Voting Stock of the Parent (or other
     securities convertible into such Voting Stock) representing 50% or more of
     the combined voting power of all Voting Stock of the Parent. As used
     herein, "beneficial ownership" shall have the meaning provided in Rule
     13d-3 of the Securities and Exchange Commission under the Securities
     Exchange Act of 1934.

          "Consolidated EBITDA" shall mean, as of any date for the four fiscal
     quarter period ending on such date with respect to the Consolidated Group
     on a consolidated basis, the sum of (a) Consolidated Net Income, plus (b)
     an amount which, in the determination of Consolidated Net Income, has been
     deducted for (i) Consolidated Interest Expense, (ii) total federal, state,
     local and foreign income, value added and similar taxes, (iii) depreciation
     and amortization expense, all as determined in accordance with GAAP, (iv)
     non-cash charges relating to equity and other performance-related
     compensation, including stock options and (v) minority equity interests in
     an amount not to exceed $15,000,000 during any such period. Notwithstanding
     the above, Consolidated EBITDA shall be (A) $78,189,000 for the fiscal
     quarter ended March 31, 2004, (B) $80,149,000 for the fiscal quarter ended
     June 30, 2004 and (C) $77,359,000 for the fiscal quarter ended September
     30, 2004.

          "Consolidated Fixed Charge Coverage Ratio" shall mean, as of the end
     of each fiscal quarter of the Consolidated Group for the four fiscal
     quarter period ending on such date with respect to the Consolidated Group
     on a consolidated basis, the ratio of (i) Consolidated EBITDA for the
     applicable period minus Consolidated Capital Expenditures for the
     applicable period to (ii) the sum of Consolidated Interest Expense for the
     applicable period plus Scheduled Funded Debt Payments for the applicable
     period

                                       19

<PAGE>

     plus payments made in connection with earnout obligations for the
     applicable period to the extent permitted hereunder plus cash taxes paid
     during the applicable period.

          "Consolidated Interest Expense" shall mean, for any period, all cash
     interest expense of the Consolidated Group (including, without limitation,
     the interest component under Capital Leases), as determined in accordance
     with GAAP.

          "Consolidated Subsidiary" shall mean, as to any Person, any GCA
     Subsidiary of such Person which under the rules of GAAP consistently
     applied should have its financial results consolidated with those of such
     Person for purposes of financial accounting statements.

          "Equity Issuance" shall mean any issuance by any Credit Party or any
     GCA Subsidiary to any Person which is not a Credit Party of (a) shares of
     its Capital Stock, (b) any shares of its Capital Stock pursuant to the
     exercise of options or warrants or (c) any shares of its Capital Stock
     pursuant to the conversion of any debt securities to equity. The term
     "Equity Issuance" shall not include any equity issued in connection with
     any Asset Disposition, any Debt Issuance or any Purchase Paper Facility.

          "Funded Debt" shall mean, with respect to any Person, without
     duplication, (i) all obligations of such Person for borrowed money, (ii)
     all obligations of such Person evidenced by bonds, debentures, notes or
     similar instruments, or upon which interest payments are customarily made,
     (iii) all obligations of such Person under conditional sale or other title
     retention agreements relating to property purchased by such Person (other
     than customary reservations or retentions of title under agreements with
     suppliers entered into in the ordinary course of business), (iv) all
     obligations of such Person issued or assumed as the deferred purchase price
     of property or services purchased by such Person (other than (A) trade debt
     incurred in the ordinary course of business and due within twelve months of
     the incurrence thereof and (B) obligations under earnout agreements in
     existence as of the Closing Date) which would appear as liabilities on a
     balance sheet of such Person, (v) the principal portion of all obligations
     of such Person under Capital Leases, (vi) all Guaranty Obligations of such
     Person with respect to Funded Debt of another Person, (vii) the maximum
     available amount of all letters of credit or acceptances issued or created
     for the account of such Person, (viii) all Funded Debt of another Person
     secured by a GCA Lien on any property of such Person, whether or not such
     Funded Debt has been assumed, provided that for purposes hereof the amount
     of such Funded Debt shall be limited to the greater of (A) the amount of
     such Funded Debt as to which there is recourse to such Person and (B) the
     fair market value of the property which is subject to such GCA Lien, (ix)
     the outstanding attributed principal amount under any securitization
     transaction, (x) the principal balance outstanding under any Synthetic
     Lease to which such Person is a party, and (xi) all preferred Capital Stock
     issued by such Person and which by the terms thereof could be (at the
     request of the holders thereof or otherwise) subject to mandatory sinking
     fund payments, redemption or other acceleration prior to the date that is 6
     months after the Maturity Date. The Funded Debt of any Person shall include
     (i) the Funded Debt of any partnership or joint venture in which such
     Person is a general partner or joint venturer, but only to the extent to

                                       20

<PAGE>

     which there is recourse to such Person for the payment of such Funded Debt
     and (ii) exclude non-recourse Indebtedness of such Person.

          "GCA Credit Documents" shall mean the Guarantor Credit Agreement, each
     of the Notes related thereto, any Joinder Agreement, the Letters of Credit,
     LOC Documents and all other agreements, documents, certificates and
     instruments delivered to the Agent or any Lender by any Credit Party in
     connection therewith (other than any agreement, document, certificate or
     instrument related to a Hedging Agreement), as the capitalized terms used
     in this definition (other than Guarantor Credit Agreement) are defined in
     the Guarantor Credit Agreement.

          "GCA Credit Party Obligations" shall mean, without duplication, (a)
     all of the obligations of the GCA Credit Parties to the GCA Lenders and the
     GCA Agent, whenever arising, under the GCA Credit Documents (including, but
     not limited to, any interest accruing after the occurrence of a filing of a
     petition of bankruptcy under the Bankruptcy Code with respect to any GCA
     Credit Party, regardless of whether such interest is an allowed claim under
     the Bankruptcy Code) and (b) all liabilities and obligations, whenever
     arising, owing from any GCA Credit Party or any of the GCA Subsidiaries to
     any Hedging Agreement Provider, arising under any Hedging Agreement
     permitted pursuant to the applicable sections of the Guarantor Credit
     Agreement.

          "GCA Permitted Liens" shall mean:

               (i) GCA Liens created by or otherwise existing, under or in
          connection with (A) the Participation Agreement or the other Operative
          Agreements in favor of the Primary Financing Parties or (B) the
          Guarantor Credit Agreement or the other GCA Credit Documents;

               (ii) GCA Liens in favor of a GCA Lender in connection with
          Hedging Agreements, but only (A) to the extent such GCA Liens secure
          obligations under Hedging Agreements with any GCA Lender, or any GCA
          Affiliate of any GCA Lender, (B) to the extent such GCA Liens are on
          the same collateral as to which the agent under the Guarantor Credit
          Agreement, on behalf of the GCA Lenders, also has a GCA Lien and (C)
          if such provider and the GCA Lenders shall share pari passu in the
          collateral subject to such GCA Liens;

               (iii) purchase money GCA Liens securing purchase money
          indebtedness (and refinancings thereof) to the extent permitted under
          Section 8B.1(c);

               (iv) GCA Liens for taxes, assessments, charges or other
          governmental levies not yet due or as to which the period of grace
          (not to exceed 60 days), if any, related thereto has not expired or
          which are being contested in good faith by appropriate proceedings,
          provided that adequate reserves with respect thereto are maintained on
          the books of the Parent or the GCA Subsidiaries, as the case may be,
          in conformity with GAAP (or, in the case of GCA Subsidiaries with

                                       21

<PAGE>

          significant operations outside of the United States of America,
          generally accepted accounting principles in effect from time to time
          in their respective jurisdictions of incorporation);

               (v) carriers', warehousemen's, mechanics', materialmen's,
          repairmen's or other like GCA Liens arising in the ordinary course of
          business which are not overdue for a period of more than 60 days or
          which are being contested in good faith by appropriate proceedings;

               (vi) pledges or deposits in connection with workers'
          compensation, unemployment insurance and other social security
          legislation and deposits securing liability to insurance carriers
          under insurance or self-insurance arrangements;

               (vii) deposits to secure the performance of bids, trade
          contracts, (other than for borrowed money), leases, statutory
          obligations, surety and appeal bonds, performance bonds and other
          obligations of a like nature incurred in the ordinary course of
          business;

               (viii) GCA Liens on the real property and fixtures of the Parent
          located at or on Lots 19 and 20, Miracle Hills Park, Douglas County,
          Nebraska and all personal property located on or at such real property
          that is integral to the operation of such real property and fixtures.

               (ix) any extension, renewal or replacement (or successive
          extensions, renewals or replacements) , in whole or in part, of any
          GCA Lien referred to in the foregoing clauses; provided that such
          extension, renewal or replacement GCA Lien shall be limited to all or
          a part of the property which secured the GCA Lien so extended, renewed
          or replaced (plus improvements on such property);

               (x) GCA Liens existing on the Closing Date and set forth on
          Schedule 1 to the Participation Agreement; provided that (a) no such
          GCA Lien shall at any time be extended to cover GCA Property or assets
          other than the property or assets subject thereto on the Closing Date
          and (b) the principal amount of the Indebtedness secured by such GCA
          Liens shall not be extended, renewed, refunded or refinanced;

               (xi) GCA Liens arising in connection with Capital Leases to the
          extent permitted under Section 8B.1(c);

               (xii) easements, rights-of-way, restrictions, encroachments, and
          other minor defects or irregularities in title to real property, in
          each case which do not and will not interfere in any material respect
          with the operation of such real property or the ordinary conduct of
          the business of the Parent or any of the GCA Subsidiaries.

                                       22

<PAGE>

               (xiii) GCA Liens arising in connection with accounts receivable
          securitizations;

               (xiv) GCA Liens on accounts receivable and associated collateral,
          lockbox and other collection accounts, records and/or proceeds
          incurred in connection with any Purchase Paper Facility or other
          non-recourse Indebtedness in the GCA Credit Parties' ordinary course
          of business and consistent with past practices; and

               (xv) other GCA Liens in addition to those permitted by the
          foregoing clauses securing Indebtedness not exceeding $1,000,000 on an
          individual basis and $10,000,000 in the aggregate outstanding at any
          one time.

          "GCA Subsidiary" shall mean, as to any Person, a corporation,
     partnership, limited liability company or other entity of which shares of
     stock or other ownership interests having ordinary voting power (other than
     stock or such other ownership interests having such power only by reason of
     the happening of a contingency) to elect a majority of the board of
     directors or other managers of such corporation, partnership or other
     entity are at the time owned, or the management of which is otherwise
     controlled, directly or indirectly through one or more intermediaries, or
     both, by such Person. Unless otherwise qualified, all references to a "GCA
     Subsidiary" or to "GCA Subsidiaries" in this Participation Agreement shall
     refer to a GCA Subsidiary or GCA Subsidiaries of the Parent; provided,
     however, that references to a "GCA Subsidiary" or to "GCA Subsidiaries" in
     this Participation Agreement shall not include Excluded Subsidiaries.

          "Guarantor" shall mean West Corporation, a Delaware corporation, and
     any of the Subsidiaries identified as a "Guarantor" on the signature pages
     to the Participation Agreement and the additional Credit Parties which
     execute a Joinder Agreement, together with their successors and permitted
     assigns.

          "Guarantor Credit Agreement" shall mean that certain Amended and
     Restated Credit Agreement dated as of November 15, 2004 among West
     Corporation, as the borrower; certain Domestic GCA Subsidiaries party
     thereto from time to time as guarantors; the several banks and other
     financial institutions party thereto from time to time, as lenders;
     Wachovia Bank, National Association, as the administrative agent; Wells
     Fargo Bank National Association, as syndication agent; Bank of America,
     N.A. and BNP Paribas, as co-documentation agents; and Wachovia Capital
     Markets, LLC, as lead arranger and sole book runner.

          "Permitted Acquisition" shall mean an acquisition or any series of
     related acquisitions by a GCA Credit Party of the assets or all of the
     Capital Stock of a Person or any division, line of business or other
     business unit of a Person (such Person or such division, line of business
     or other business unit of such Person referred to herein as the "Target"),
     in each case that is in the same line of business (or assets used in the
     same line of business) as the GCA Credit Parties and the GCA Subsidiaries
     or whereby a

                                       23

<PAGE>

     substantial portion of the acquired business relies upon automated
     transactions, telephone representatives or telephony technology, so long as
     (a) no Default or Event of Default shall then exist or would exist after
     giving effect thereto; (b) the Credit Parties shall demonstrate to the
     reasonable satisfaction of the Agent that the Credit Parties will be in
     compliance on a pro forma basis with all of the terms and provisions of the
     financial covenants set forth in Section 8A.9; (c) the Target, if a Person
     and if after the acquisition the Target would be a Material Domestic GCA
     Subsidiary, shall have executed and delivered to the Agent a Joinder
     Agreement in accordance with the terms of Section 8A.10; (d) such
     acquisition is not a "hostile" public company acquisition and has been
     approved by the Board of Directors and/or shareholders of the applicable
     GCA Credit Party and the public company Target; and (e) with respect to any
     acquisition where the total consideration shall be (i) greater than
     $75,000,000 and less than or equal to $150,000,000, the Parent shall have
     delivered to the Agent and each of the Primary Financing Parties not more
     than thirty (30) days after the consummation of such acquisition a
     reasonably detailed description of the material terms of such acquisition
     (including, without limitation, the purchase price and method and structure
     of payment) and of each Target and (ii) greater than $150,000,000, the
     Parent shall have delivered to the Agent and each of the Primary Financing
     Parties not less than five (5) Business Days prior to the consummation of
     such acquisition (A) a reasonably detailed description of the material
     terms of such acquisition (including, without limitation, the purchase
     price and method and structure of payment) and of each Target, (B) audited
     financial statements of the Target, or company-prepared financial
     statements that have been certified by the Target, for the Target's two (2)
     most recent fiscal years and unaudited fiscal year-to-date statements for
     the most recent interim periods, which financial statements shall be
     consistent with any financial statements filed with the Securities and
     Exchange Commission in connection with such acquisition and (C) a
     certificate, in form and substance reasonably satisfactory to the Agent,
     executed by a Responsible Officer of the Parent (1) certifying that such
     Permitted Acquisition complies with the requirements of this Agreement and
     (2) demonstrating compliance with subsections (b) and (e) of this
     definition; provided, however, that an acquisition of a Target that is not
     incorporated, formed or organized in the United States (a "Foreign Target")
     shall only qualify as a Permitted Acquisition if each of the other
     requirements set forth in this definition shall have been satisfied and the
     total consideration for all such Foreign Targets does not exceed
     $50,000,000 in the aggregate during the term of this Agreement.

          "Permitted Investments" shall mean:

               (i) cash and Cash Equivalents;

               (ii) receivables owing to the Parent or any of the GCA
          Subsidiaries or any receivables and advances to suppliers or
          customers, in each case if created, acquired or made in the ordinary
          course of business and payable or dischargeable in accordance with
          customary trade terms;

               (iii) Investments in and loans to any GCA Credit Parties;

                                       24

<PAGE>

               (iv) Investments in and loans to Domestic GCA Subsidiaries of the
          Parent that are not guarantors under the Guarantor Credit Agreement
          solely for the purpose of purchasing third party debt obligations;
          provided that the aggregate amount of Investments and loans made
          pursuant to this clause (iv), together with the aggregate amount of
          Indebtedness incurred pursuant to Section 8B.1(d)(iii), shall not
          exceed $100,000,000 at any time outstanding;

               (v) Investments in and loans to Subsidiaries of the Parent that
          are not guarantors under the Guarantor Credit Agreement (other than
          Investments and loans pursuant to clause (iv) above); provided that
          the aggregate amount of such Investments and loans, together with the
          aggregate amount of Indebtedness incurred pursuant to Section
          8B.1(d)(iv), shall not exceed $50,000,000 at any time outstanding;

               (vi) loans and advances to employees (other than any officer or
          director) of the Parent or the GCA Subsidiaries in an aggregate amount
          not to exceed $1,000,000 at any time outstanding;

               (vii) Investments (including debt obligations) received in
          connection with the bankruptcy or reorganization of suppliers and
          customers and in settlement of delinquent obligations of, and other
          disputes with, customers and suppliers arising in the ordinary course
          of business;

               (viii) Investments, acquisitions or transactions permitted under
          Section 8B.4(b);

               (ix) the Parent may enter into Hedging Agreements to the extent
          permitted pursuant to Section 8B.1;

               (x) loans, advances and/or Investments, in a aggregate amount not
          to exceed $25,000,000 at any time outstanding, by Asset Direct
          Mortgage, LLC or any other GCA Credit Party in connection with a
          mortgage loan program consisting of the purchase, origination and/or
          pooling of mortgage loans;

               (xi) Permitted Acquisitions; and

               (xii) additional loans, advances and/or Investments of a nature
          not contemplated by the foregoing clauses hereof, provided that such
          loans, advances and/or Investments made pursuant to this clause (xii)
          shall not exceed an aggregate amount of $25,000,000 at any time
          outstanding.

          "Restricted Payment" shall mean (a) any dividend or other
     distribution, direct or indirect, on account of any shares of any class of
     Capital Stock of the Parent or any of its GCA Subsidiaries, now or
     hereafter outstanding, (b) any redemption, retirement, sinking fund or
     similar payment, purchase or other acquisition for value, direct or
     indirect, of any shares of any class of Capital Stock of the Parent or any
     of its GCA Subsidiaries, now or

                                       25

<PAGE>

     hereafter outstanding, (c) any payment made to retire, or to obtain the
     surrender of, any outstanding warrants, options or other rights to acquire
     shares of any class of Capital Stock of the Parent or any of its GCA
     Subsidiaries, now or hereafter outstanding, or (d) any payment or
     prepayment of principal of, premium, if any, or interest on, redemption,
     purchase, retirement, defeasance, sinking fund or similar payment with
     respect to, any Subordinated Debt.

     1.10 Addition of New Definitions in Appendix A to the Participation
Agreement.  The following definitions are hereby added in appropriate
alphabetical order to Appendix A to the Participation Agreement:

          "Excluded Subsidiaries" shall mean Attention Funding Corporation and
     Attention Funding Trust.

          "Guaranty Obligations" shall mean, with respect to any Person, without
     duplication, any obligations of such Person (other than endorsements in the
     ordinary course of business of negotiable instruments for deposit or
     collection) guaranteeing or intended to guarantee any Indebtedness of any
     other Person in any manner, whether direct or indirect, and including
     without limitation any obligation, whether or not contingent, (i) to
     purchase any such Indebtedness or any property constituting security
     therefor, (ii) to advance or provide funds or other support for the payment
     or purchase of any such Indebtedness or to maintain working capital,
     solvency or other balance sheet condition of such other Person (including
     without limitation keep well agreements, maintenance agreements, comfort
     letters or similar agreements or arrangements) for the benefit of any
     holder of Indebtedness of such other Person, (iii) to lease or purchase GCA
     Property, securities or services primarily for the purpose of assuring the
     holder of such Indebtedness, or (iv) to otherwise assure or hold harmless
     the holder of such Indebtedness against loss in respect thereof. The amount
     of any Guaranty Obligation hereunder shall (subject to any limitations set
     forth therein) be deemed to be an amount equal to the outstanding principal
     amount (or maximum principal amount, if larger) of the Indebtedness in
     respect of which such Guaranty Obligation is made.

          "Hedging Agreement Provider" shall mean any Person that enters into a
     Hedging Agreement with a GCA Credit Party or any of its GCA Subsidiaries
     that is permitted by Section 8B.1 of the Participation Agreement to the
     extent such Person is a (a) GCA Lender, (b) a GCA Affiliate of a GCA Lender
     or (c) any other Person that was a GCA Lender (or a GCA Affiliate of a GCA
     Lender) at the time it entered into the Hedging Agreement but has ceased to
     be a GCA Lender (or whose GCA Affiliate has ceased to be a GCA Lender)
     under the GCA Credit Agreement.

          "Investment" shall mean all investments, in cash or by delivery of
     property made, directly or indirectly in, to or from any Person, whether by
     acquisition of shares of Capital Stock, property, assets, indebtedness or
     other obligations or securities or by loan advance, capital contribution or
     otherwise.

          "Material Domestic GCA Subsidiary" means any Domestic GCA Subsidiary
     of the Parent that, together with its GCA Subsidiaries, (i) owns more than
     $15,000,000 in

                                       26

<PAGE>

     assets on a pro forma basis or (ii) generates more than 5% of Consolidated
     EBITDA on a pro forma basis for the four fiscal quarter period most
     recently ended; provided, however, that if at any time there are Domestic
     GCA Subsidiaries which are not classified as "Material Domestic GCA
     Subsidiaries" but which collectively account for greater than $40,000,000
     in assets on a pro forma basis or which collectively generate more than 20%
     of Consolidated EBITDA on a pro forma basis, then the Parent shall
     immediately designate one or more of such Domestic GCA Subsidiaries as
     Material Domestic GCA Subsidiaries and cause any such Domestic GCA
     Subsidiaries to comply with the provisions of Section 8A.10 of the
     Participation Agreement in a number sufficient to comply with such
     requirement.

          "Purchase Paper Facility" shall mean any financing arrangement
     involving the purchase by the GCA Credit Parties of commercial or consumer
     debt (including, without limitation, that certain loan agreement dated as
     of August 15, 2001 by and between Worldwide Asset Purchasing, LLC and CFSC
     Capital Corp. XXXIV and that certain Financing Facility and Security
     Agreement, dated as of December 19, 2003, by and among Arrow Funding, LLC,
     Attention, LLC, Attention Funding Corporation, Attention Funding Trust, and
     Arrow Financial Services, LLC), as amended, modified supplemented or
     replaced from time to time.

          "Super Majority Financing Parties" shall mean Financing Parties
     holding in the aggregate greater than 80% of the outstanding Loans and
     Lessor Advances; provided, however, that if any Financing Party shall be a
     Defaulting Primary Financing Party at such time, then the outstanding Loans
     and Lessor Advances of such Financing Party shall be excluded from the
     determination of Super Majority Financing Parties.

          "Wachovia" shall mean Wachovia Bank, National Association, together
     with its successors and/or assigns.

     1.11 Deletion of various terms from Appendix A to the Participation
Agreement.  The terms "Acquisition", "Acquisition Documents", "Continuing
Directors", "Net Cash Proceeds" and "Pledge Agreement" are hereby deleted in
their entirety from Appendix A to the Participation Agreement.

     1.12 Amendment to Sections 17.1(g), (h) and (i) of the Lease.  Sections
17.1(g), (h) and (i) of the Lease are hereby deleted in their entirety and
replaced by the following:

          (g) The liquidation or dissolution of the Parent, any GCA Subsidiary
     or any Excluded Subsidiary, or the suspension of the business of the
     Parent, any GCA Subsidiary or any Excluded Subsidiary, or the filing by the
     Parent, any GCA Subsidiary or any Excluded Subsidiary of a voluntary
     petition or an answer seeking reorganization, arrangement, readjustment of
     its debts or for any other relief under the United States Bankruptcy Code,
     as amended, or under any other insolvency act or law, state or federal, now
     or hereafter existing, or any other action of the Parent, any GCA
     Subsidiary or any Excluded Subsidiary indicating its consent to, approval
     of or acquiescence in, any such petition or proceeding; the application by
     the Parent, any GCA Subsidiary or any

                                       27

<PAGE>

     Excluded Subsidiary for, or the appointment by consent or acquiescence of
     the Parent, any GCA Subsidiary or any Excluded Subsidiary of a receiver, a
     trustee or a custodian of the Parent, any GCA Subsidiary or any Excluded
     Subsidiary for all or a substantial part of its property; the making by the
     Parent, any GCA Subsidiary or any Excluded Subsidiary of any assignment for
     the benefit of creditors; the admission by the Parent, any GCA Subsidiary
     or any Excluded Subsidiary in writing of its inability to pay its debts as
     they mature or the Parent, any GCA Subsidiary or any Excluded Subsidiary is
     generally not paying its debts and other financial obligations as they
     become due and payable; or the Parent, any GCA Subsidiary or any Excluded
     Subsidiary taking any corporate action to authorize any of the foregoing;

          (h) The filing of an involuntary petition against the Parent, any GCA
     Subsidiary or any Excluded Subsidiary in bankruptcy or seeking
     reorganization, arrangement, readjustment of its debts or for any other
     relief under the United States Bankruptcy Code, as amended, or under any
     other insolvency act or law, state or federal, now or hereafter existing;
     or the involuntary appointment of a receiver, a trustee or a custodian of
     the Parent, any GCA Subsidiary or any Excluded Subsidiary for all or a
     substantial part of its property; or the issuance of a warrant of
     attachment, execution or similar process against any substantial part of
     the property of the Parent, any GCA Subsidiary or any Excluded Subsidiary,
     and the continuance of any of such events for ninety (90) days undismissed
     or undischarged;

          (i) The adjudication of the Parent, any GCA Subsidiary or any Excluded
     Subsidiary as bankrupt or insolvent;

     1.13 Amendment to Schedule 2.1 of the Credit Agreement.  Schedule 2.1 of
the Credit Agreement is hereby deleted in its entirety and replaced with Exhibit
2 attached to this Fourth Amendment.

                                    SECTION 2
                               CLOSING CONDITIONS

     2.1 Closing Conditions.  This Fourth Amendment shall become effective as of
the date hereof upon satisfaction of the following conditions (in form and
substance reasonably acceptable to the Agent):

          (a) Executed Amendment.  Receipt by the Agent of a copy of this Fourth
     Amendment duly executed by the Borrower, the Agent, the Majority Secured
     Parties and the Credit Parties.

          (b) Resolutions.  Receipt by the Agent of copies of resolutions of the
     Board of Directors of each of the Credit Parties approving and adopting
     this Fourth Amendment, the transactions contemplated herein and authorizing
     execution and delivery hereof, certified by a secretary or assistant
     secretary of such Credit Party to be true and correct and in force and
     effect as of the date hereof.

                                       28

<PAGE>

          (c) Incumbency Certificate.  Receipt by the Agent of an incumbency
     certificate with respect to each of the Credit Parties.

          (d) Legal Opinions of Counsel.  The Agent shall have received opinions
     of legal counsel for the Credit Parties, dated as of the date hereof and
     addressed to the Agent and the Primary Financing Parties, which opinions
     shall be in form and substance acceptable to the Agent and the Primary
     Financing Parties.

          (e) Material Adverse Event.  Since December 31, 2003, there shall have
     been no change or occurrence which could reasonably be expected to have a
     Material Adverse Effect.

          (f) Litigation.  There shall not exist any pending or threatened
     litigation or investigation affecting or relating to the Parent or any of
     its Subsidiaries, the Participation Agreement or the other Operative
     Agreements that in the reasonable judgment of the Agent and Primary
     Financing Parties could materially adversely affect the Parent and its
     Subsidiaries, taken as a whole, or the Participation Agreement or the other
     Operative Agreements, that has not been settled, dismissed, vacated,
     discharged or terminated prior to the date hereof.

          (g) Officer's Certificate.  The Agent shall have received a
     certificate executed by a responsible officer of the Parent as of the date
     hereof stating that immediately after giving effect to this Fourth
     Amendment and all the transactions contemplated to occur on the date
     hereof, (A) no Default or Event of Default exists, (B) all representations
     and warranties contained in this Fourth Amendment and in the Participation
     Agreement and the other Operative Agreements (except those which expressly
     relate to an earlier date) are true and correct, and (C) the Credit Parties
     are in compliance with each of the financial covenants set forth in Section
     8A.9 to the Participation Agreement on a pro forma basis.

          (h) Consents.  The Agent shall have received evidence that all
     governmental, shareholder and material third party consents and approvals
     necessary in connection with this Fourth Amendment and other transactions
     contemplated hereby have been obtained and all applicable waiting periods
     have expired without any action being taken by any authority that could
     restrain, prevent or impose any material adverse conditions on such
     transactions or that could seek or threaten any of such transactions.

          (i) Fees.  Subject to the terms of the Fee Letter (as defined in the
     Guarantor Credit Agreement), receipt by the Agent of all reasonable fees
     and expenses of the Agent in connection with the preparation, execution and
     delivery of this Fourth Amendment, including, without limitation, the
     reasonable fees and expenses of Moore & Van Allen PLLC.

          (j) Closing with regard to the Guarantor Credit Agreement.  The
     conditions precedent to the Closing Date (as such term is defined in the
     Guarantor Credit Agreement)

                                       29

<PAGE>

     shall all have been satisfied or, if not satisfied, shall have been waived
     by the appropriate parties under the Guarantor Credit Agreement.
     Additionally, the Guarantor Credit Agreement shall be in full force and
     effect.

          (k) Joinder Agreements.  The Agent shall have received one or more
     Joinder Agreements duly executed by West Asset Management, Inc., The Debt
     Depot, LLC, West Telemarketing, LP, West Transaction Services, LLC, West
     Transaction Services II, LLC, West Business Services, LP and West Asset
     Purchasing, LLC, and (respecting each of the foregoing entities) such other
     documentation as required pursuant to the Operative Agreements for the
     effective joinder of a new Guarantor.

                                    SECTION 3
                                  MISCELLANEOUS

     3.1 Amended Terms.  The terms "Participation Agreement", "Lease", "Credit
Agreement" and "Guaranty" as used in each of the Operative Agreements shall
hereafter mean the Participation Agreement, Lease, Credit Agreement and
Guaranty, each as amended by this Fourth Amendment. Except as specifically
amended or modified hereby or otherwise agreed, the Participation Agreement,
Lease, Credit Agreement and Guaranty are hereby ratified and confirmed and shall
remain in full force and effect according to their respective terms.

     3.2 Representations and Warranties of the Credit Parties.  Each of the
Credit Parties represents and warrants to the Financing Parties as follows:

          (a) It has taken all necessary action to authorize the execution,
     delivery and performance of this Fourth Amendment.

          (b) This Fourth Amendment has been duly executed and delivered by such
     Person and constitutes such Person's legal, valid and binding obligations,
     enforceable in accordance with its terms, except as such enforceability may
     be subject to (i) bankruptcy, insolvency, reorganization, fraudulent
     conveyance or transfer, moratorium or similar laws affecting creditors'
     rights generally and (ii) general principles of equity (regardless of
     whether such enforceability is considered in a proceeding at law or in
     equity).

          (c) No consent, approval, authorization or order of, or filing,
     registration or qualification with, any court or Governmental Authority or
     third party is required in connection with the execution, delivery or
     performance by such Person of this Fourth Amendment.

          (d) The representations and warranties of such Person set forth in
     Sections 6.2 and 6.3 of the Participation Agreement and Section 2 of the
     Guaranty, as the case may be, are, subject to the limitations set forth
     therein, true and correct in all material respects as of the date hereof
     (except for those which expressly relate to an earlier date).

                                       30

<PAGE>

     3.3 Reaffirmation of Credit Party Obligations.  Each Credit Party hereby
ratifies the Operative Agreements (as amended by this Fourth Amendment) and
acknowledges and reaffirms (a) that it is bound by all terms of the Operative
Agreements (as amended by this Fourth Amendment) applicable to it and (b) that
it is responsible for the observance and full performance of its respective
obligations pursuant to the Operative Agreements.

     3.4 Operative Agreements.  This Fourth Amendment shall constitute an
Operative Agreement under the terms of the Participation Agreement.

     3.5 Expenses.  Subject to the terms of the Fee Letter (as defined in the
Guarantor Credit Agreement), the Parent agrees to pay all reasonable costs and
expenses of the Agent in connection with the preparation, execution and delivery
of this Fourth Amendment, including, without limitation, the reasonable fees and
expenses of Moore & Van Allen, PLLC, and all previously incurred fees and
expenses which remain outstanding on the date hereof.

     3.6 Entirety.  This Fourth Amendment and the other Operative Agreements
embody the entire agreement between the parties hereto and supersede all prior
agreements and understandings, oral or written, if any, relating to the subject
matter hereof.

     3.7 Counterparts/Telecopy.  This Fourth Amendment may be executed in any
number of counterparts, each of which when so executed and delivered shall be an
original, but all of which shall constitute one and the same instrument.
Delivery of executed counterparts of this Fourth Amendment by telecopy shall be
effective as an original and shall constitute a representation that an original
shall be delivered.

     3.8 Governing Law.  This Fourth Amendment and the rights and obligations of
the parties under this Fourth Amendment shall be governed by, and construed and
interpreted in accordance with, the law of the State of North Carolina.

     3.9 Consent to Jurisdiction; Service of Process; Waiver of Jury Trial;
Venue.  The jurisdiction, services of process, waiver of jury trial and venue
provisions set forth in Section 12.7 of the Participation Agreement are hereby
incorporated by reference, mutatis mutandis.

     3.10 Further Assurances.  The Credit Parties agree to promptly take such
action, upon the request of the Agent, as is reasonably necessary to carry out
the intent of this Fourth Amendment.

     3.11 Release of Certain Guarantors.  The parties to this Fourth Amendment
hereby agree that the entities referenced on Exhibit 3 attached to this Fourth
Amendment are hereby released, without the need of any additional action, as
Guarantors.

                            [Signature Pages Follow]

                                       31

<PAGE>

     IN WITNESS WHEREOF, each of the parties hereto has caused a counterpart of
this Fourth Amendment to be duly executed under seal and delivered as of the
date and year first above written.

LESSEE:                                 WEST FACILITIES CORPORATION,
                                        a Delaware corporation

                                        By: /s/ Paul M. Mendlik
                                            ------------------------------------
                                        Name: Paul M. Mendlik
                                        Title: Chief Financial Officer

                           (signature pages continue)

<PAGE>

PARENT:                                 WEST CORPORATION,
                                        a Delaware corporation

                                        By: /s/ Paul M. Mendlik
                                            ------------------------------------
                                        Name: Paul M. Mendlik
                                        Title: Chief Financial Officer

                           (signature pages continue)

<PAGE>

GUARANTORS:                             WEST CORPORATION,
                                        a Delaware corporation

                                        WEST TELEMARKETING CORPORATION II,
                                        a Delaware corporation

                                        WEST INTERACTIVE CORPORATION,
                                        a Delaware corporation

                                        NORTHERN CONTACT, INC.,
                                        a Delaware corporation

                                        INTERCALL, INC.,
                                        a Delaware corporation

                                        INTERCALL TELECOM VENTURES, LLC,
                                        a Delaware limited liability company

                                        CONFERENCECALL.COM, INC.,
                                        a Delaware corporation

                                        WEST RECEIVABLE SERVICES, INC.,
                                        a Delaware corporation

                                        NATIONAL ASSET MANAGEMENT
                                        ENTERPRISES, INC., a Georgia corporation

                                        WEST ASSET MANAGEMENT, INC.,
                                        a Delaware corporation

                                        By: /s/ Paul M. Mendlik
                                            ------------------------------------
                                        Name: Paul M. Mendlik
                                        Title: Chief Financial Officer

                           (signature pages continue)

<PAGE>

                                        ATTENTION, LLC,
                                        a Georgia limited liability company

                                        WORLDWIDE ASSET MANAGEMENT, LLC,
                                        a Georgia limited liability company

                                        WEST INTERNATIONAL ASSET
                                        MANAGEMENT, LLC, a Nevada limited
                                        liability company

                                        BUYDEBTCO, LLC,
                                        a Nevada limited liability company

                                        THE DEBT DEPOT, LLC,
                                        a Delaware limited liability company

                                        ASSET DIRECT MORTGAGE, LLC,
                                        a Delaware limited liability company

                                        WEST TELEMARKETING, LP,
                                        a Delaware limited partnership
                                        By: West Transaction Services, LLC,
                                            its General Partner

                                        WEST TRANSACTION SERVICES, LLC,
                                        a Delaware limited liability company

                                        WEST TRANSACTION SERVICES II, LLC,
                                        a Delaware limited liability company

                                        WEST BUSINESS SERVICES, LP,
                                        a Delaware limited partnership
                                        By: West Transaction Services, LLC,
                                            its General Partner

                                        WEST ASSET PURCHASING, LLC,
                                        a Nevada limited liability company

                                        By: /s/ Paul M. Mendlik
                                            ------------------------------------
                                        Name: Paul M. Mendlik
                                        Title: Manager

<PAGE>

                                        WEST DIRECT, INC.,
                                        a Delaware corporation

                                        By: /s/ Paul M. Mendlik
                                            ------------------------------------
                                        Name: Paul M. Mendlik
                                        Title: Treasurer

                           (signature pages continue)

<PAGE>

                                        WACHOVIA DEVELOPMENT CORPORATION,
                                        as the Borrower and as the Lessor

                                        By: /s/ Evander S. Jones Jr.
                                            ------------------------------------
                                        Name: Evander S. Jones Jr.
                                        Title: Vice President

                           (signature pages continue)

<PAGE>

                                        WACHOVIA BANK, NATIONAL
                                        ASSOCIATION, as the Agent

                                        By: /s/ Michael Romanzo
                                            ------------------------------------
                                        Name: Michael Romanzo
                                        Title: Vice President

                           (signature pages continue)

<PAGE>

                                        WACHOVIA CAPITAL INVESTMENTS, INC.,
                                        as a Lender

                                        By: /s/ Evander S. Jones, Jr.
                                            ------------------------------------
                                        Name: Evander S. Jones Jr.
                                        Title: Vice President

                           (signature pages continue)

<PAGE>

                                        COMMERCEBANK, N.A., as a Lender

                                        By: /s/ Lourdes Jordan
                                            ------------------------------------
                                        Name:
                                              ----------------------------------
                                        Title: Lourdes Jordan 2-LJ-149

                              (signature pages end)

<PAGE>

                                   Schedule 1

                               GCA PERMITTED LIENS

<TABLE>
<CAPTION>
      Debtor          Secured Party     Jurisdiction     Filing Type     Filing Date         Description of Collateral
-----------------   ----------------   -------------   ---------------   -----------   ------------------------------------
<S>                 <C>                <C>             <C>               <C>           <C>
 West Facilities     Wachovia Bank,       Douglas           UCC-1          6/4/2003     Fixture Filing for Douglas County,
   Corporation          National          County,       (#2003106373)                    Nebraska property subject to the
                     Association, as      Nebraska                                          Synthetic Lease transaction
                          Agent

 West Facilities     Wachovia Bank,       Delaware          UCC-1         5/14/2003       All assets located at the Bexar
   Corporation          National                         (#31241192)                     County, Texas and Douglas County,
                     Association, as                                                    Nebraska properties subject to the
                          Agent                                                             Synthetic Lease transaction

  West Facilities    Wachovia Bank,       Douglas           UCC-1          6/4/2003      All assets located at the Douglas
   Corporation          National          County,       (#2003-106381)                 County, Nebraska property subject to
                     Association, as      Nebraska                                        the Synthetic Lease transaction
                          Agent

  West Facilities    Wachovia Bank,       Delaware          UCC-1         5/14/2003     Fixture Filing for Douglas County,
   Corporation          National                         (#31241267)                        Nebraska property (filed in
                     Association, as                                                      connection with Synthetic Lease
                          Agent                                                                    transaction)

  West Facilities    Wachovia Bank,       Douglas           UCC-1          6/4/2003     Lease filing for the Douglas County,
   Corporation          National          County,       (#2003-106386)                   Nebraska property subject to the
                     Association, as      Nebraska                                          Synthetic Lease transaction
                    Agent (Assignee)

  West Facilities    Wachovia Bank,       Delaware          UCC-1         5/14/2003     Lease filing for the Bexar County,
   Corporation          National                         (#31241481)                    Texas and Douglas County, Nebraska
                     Association, as                                                    properties subject to the Synthetic
                    Agent (Assignee)                                                             Lease transaction

 West Facilities     Wachovia Bank,        Bexar            UCC-1         5/15/2003      Fixture Filing for Bexar County,
   Corporation          National       County, Texas    (#20030121807)                     Texas property subject to the
                     Association, as                                                        Synthetic Lease transaction
                          Agent

 West Facilities     Wachovia Bank,        Bexar            UCC-1           5/16/04     Lease filing for the Bexar County,
   Corporation          National       County, Texas    (#20030121810)                     Texas property subject to the
                       Association                                                          Synthetic Lease transaction
                       (Assignee)

 West Facilities     Wachovia Bank,        Bexar            UCC-1           5/16/04       All assets located at the Bexar
   Corporation          National       County, Texas    (#20030121809)                   County, Texas property subject to
                       Association                                                        the Synthetic Lease transaction

  National Asset    Ameritech Credit      Superior          UCC-1         12/06/2000     Certain Leased Security and Other
    Management         Corporation        Court of     (#033200016573)                               Equipment
Enterprises, Inc.                       Cobb County,
                                          Georgia
</TABLE>

                                 Sechedule 1-1

<PAGE>

<TABLE>
<CAPTION>
      Debtor          Secured Party     Jurisdiction      Filing Type      Filing Date         Description of Collateral
-----------------   ----------------   -------------   -----------------   -----------   ------------------------------------
<S>                 <C>                <C>             <C>                 <C>           <C>
 Worldwide Asset     B-Line, L.L.C.       Superior           UCC-1          5/21/2004       Certain Consumer Loan Accounts
 Management, LLC                          Court of      (#060200406600)
                                           Fulton
                                          County,
                                          Georgia

 Worldwide Asset     B-Line, L.L.C.       Superior           UCC-1          6/18/2004       Certain Consumer Loan Accounts
 Management, LLC                          Court of      (#060200407871)
                                           Fulton
                                          County,
                                          Georgia

 Worldwide Asset     B-Line, L.L.C.       Superior           UCC-1          7/22/2004       Certain Consumer Loan Accounts
 Management, LLC                          Court of      (#060200409362)
                                           Fulton
                                          County,
                                          Georgia

 Worldwide Asset     B-Line, L.L.C.       Superior           UCC-1          8/12/2004       Certain Consumer Loan Accounts
 Management, LLC                          Court of      (#060200410417)
                                           Fulton
                                          County,
                                          Georgia

 Worldwide Asset     B-Line, L.L.C.       Superior           UCC-1          9/14/2004       Certain Consumer Loan Accounts
 Management, LLC                          Court of      (#060200411957)
                                           Fulton
                                          County,
                                          Georgia

 Worldwide Asset     B-Line, L.L.C.       Superior           UCC-1          10/13/2004      Certain Consumer Loan Accounts
 Management, LLC                          Court of      (#060200413194)
                                           Fulton
                                          County,
                                          Georgia

  Attention, LLC     Arrow Funding,       Superior           UCC-1          12/19/2003    All accounts sold to Arrow Funding
                           LLC            Court of     (#67-2003-013425)                     Corporation by Attention, LLC
                       (Assigned)         Gwinnett
                                          County,
                                          Georgia

  Attention, LLC      Arrow Funding,      Superior           UCC-1          12/19/2003    Attention Funding Corporation Stock
                           LLC            Court of     (#67-2003-013426)                 and all other interests in Attention
                                          Gwinnett                                          Funding Corporation acquired by
                                          County,                                                   Attention, LLC
                                          Georgia
</TABLE>

Note: 1. See Schedule 3.18(a) for Liens on real property.

                                  Schedule 1-2

<PAGE>

                                   Schedule 2

                                  SUBSIDIARIES

<TABLE>
<CAPTION>
                         Jurisdiction of      No. of      Outstanding          Owner of        No. of   Percentage of
                          Incorporation/   Outstanding     Warrants,         Outstanding       Shares       Shares
      Subsidiary           Organization       Shares     Options, Etc.          Shares          Owned       Owned
----------------------   ---------------   -----------   -------------   -------------------   ------   -------------
<S>                      <C>               <C>           <C>             <C>                   <C>      <C>
   West Transaction          Delaware          N/A             0           West Corporation      N/A         100%
     Services, LLC

   West Transaction          Delaware          N/A             0           West Corporation      N/A         100%
   Services II, LLC

West Telemarketing, LP       Delaware          N/A             0           West Transaction      N/A         99%
                                                                           Services II, LLC

                                                                           West Transaction
                                                                            Services, LLC                     1%

  West Telemarketing         Delaware         10,000           0         West Telemarketing,   10,000        100%
    Corporation II                                                                LP

     West Business           Delaware          N/A             0           West Transaction      N/A         99%
     Services, LP                                                          Services II, LLC

                                                                           West Transaction
                                                                            Services, LLC                     1%

    West Facilities          Delaware         10,000           0           West Corporation    10,000        100%
      Corporation

   West Interactive          Delaware         10,000           0           West Corporation    10,000        100%
      Corporation

   West Direct, Inc.         Delaware         10,000           0           West Corporation    10,000        100%

    Attention, LLC           Georgia           N/A             0           West Corporation      N/A         100%

Northern Contact, Inc.       Delaware         10,000           0         West Telemarketing,   10,000        100%
                                                                                  LP
  West International         Delaware         1,000            0           West Corporation     1,000        100%
      Corporation

  West Telemarketing       Nova Scotia,       20,000           0          Northern Contact,    20,000        100%
      Canada, ULC             Canada                                             Inc.

  Attention III, LLC         Georgia           N/A             0            Attention, LLC       N/A         100%

   Attention Funding         Delaware         1,000            0            Attention, LLC      1,000        100%
      Corporation

   Attention Funding         Delaware          N/A             0          Attention Funding      N/A         100%
         Trust                                                               Corporation
</TABLE>

                                  Schedule 2-1

<PAGE>

<TABLE>
<CAPTION>
                         Jurisdiction of      No. of      Outstanding          Owner of        No. of   Percentage of
                          Incorporation/   Outstanding     Warrants,         Outstanding       Shares       Shares
      Subsidiary           Organization       Shares     Options, Etc.          Shares          Owned       Owned
----------------------   ---------------   -----------   -------------   -------------------   ------   -------------
<S>                      <C>               <C>           <C>             <C>                   <C>      <C>
    InterCall, Inc.         Delaware          10,000           0           West Corporation    10,000        100%

   InterCall Telecom        Delaware           N/A             0           InterCall, Inc.       N/A         100%
     Ventures, LLC

    InterCall, Inc.       New Brunswick        100             0           InterCall, Inc.       100         100%

 InterCall Australia        Australia          100             0           InterCall, Inc.       100         100%
       Pty. Ltd.

 InterCall Singapore        Singapore           2              0           InterCall, Inc.        2          100%
       Pte. Ltd.

 InterCall Hong Kong        Hong Kong         10,000           0           InterCall, Inc.     10,000        100%
       Pty. Ltd.

InterCall Asia Pacific      Australia          100             0           InterCall, Inc.       100         100%
  Holdings Pty. Ltd.

 InterCall New Zealand     New Zealand         100             0           InterCall, Inc.       100         100%
        Limited

InterCall Conferencing       United             10             0           InterCall, Inc.       10          100%
   Services Limited          Kingdom

 Legal Connect Limited       United             2              0              InterCall           2          100%
                             Kingdom                                         Conferencing
                                                                           Services Limited

    Jamaican Agent           Jamaica          1,000            0           West Corporation      999         99.9%
   Services Limited                                                       Northern Contact,
                                                                                 Inc.             1          0.1%

West Contact Services,     Philippines        10,000           0           West Corporation     9,995       99.95
         Inc.                                                             Hector M. De Leon       1          .01%
                                                                           Thomas B. Barker       1          .01%
                                                                            Mark V. Lavin         1          .01%
                                                                          Bethilda Carabuena      1          .01%
                                                                            Maria Victoria
                                                                            Vergel-Roldan         1          .01%

    ConferenceCall.         Delaware           1,000           0           InterCall, Inc.      1,000        100%
       com, Inc.

 InterCall Japan, K.K.        Japan             200            0           InterCall, Inc.       130          65%
                                                                         Tozai Sogo Law Firm      70          35%

    West Receivable         Delaware          10,000           0           West Corporation    10,000        100%
    Services, Inc.
</TABLE>

                                  Schedule 2-2

<PAGE>

<TABLE>
<CAPTION>
                         Jurisdiction of      No. of      Outstanding          Owner of        No. of   Percentage of
                          Incorporation/   Outstanding     Warrants,         Outstanding       Shares       Shares
      Subsidiary           Organization       Shares     Options, Etc.          Shares          Owned       Owned
----------------------   ---------------   -----------   -------------   -------------------   ------   -------------
<S>                      <C>               <C>           <C>             <C>                   <C>      <C>
    Worldwide Asset          Georgia           N/A             0           West Receivable       N/A         100%
    Management, LLC                                                         Services, Inc.

    National Asset           Georgia          3,077            0           West Receivable      3,077        100%
      Management                                                            Services, Inc.
   Enterprises, Inc.

  West International         Nevada            N/A             0           West Receivable       N/A         100%
 Asset Management, LLC                                                      Services, Inc.

    Worldwide Asset          Nevada            N/A             0           West Receivable       N/A          70%
    Purchasing, LLC                                                         Services, Inc.

                                                                          Cargill Financial
                                                                            Services Corp.
                                                                                XXXIV                         30%

    BuyDebtCo, LLC           Nevada            N/A             0           West Receivable       N/A         100%
                                                                            Services, Inc.

  The Debt Depot, LLC       Delaware           N/A             0           West Receivable       N/A         100%
                                                                            Services, Inc.

Asset Direct Mortgage,      Delaware           N/A             0           West Corporation      N/A         100%
          LLC

Portafolios NAM, S. de       Mexico            N/A             0           Worldwide Asset       N/A          99%
     R.L. de C.V.                                                          Collections, LLC

                                                                            BuyDebtCo, LLC                    1%

 Portafolios NAM-1, S.       Mexico            N/A             0          West International     N/A          99%
    de R.L. de C.V.                                                       Asset Management,
                                                                                 LLC
                                                                            BuyDebtCo, LLC                    1%

    GCA Corporacion          Mexico            N/A             0              Worldwide          N/A          99%
 Gerencial de Activos,                                                   International Asset
  S. de R.L. de C.V.                                                       Management, LLC

                                                                            BuyDebtCo, LLC                    1%

West Asset Management,      Delaware          10,000           0           West Receivable     10,000        100%
         Inc.                                                               Services, Inc.

West Asset Purchasing,       Nevada            N/A             0           West Receivable       N/A         100%
          LLC                                                               Services, Inc.
</TABLE>

                                  Schedule 2-3

<PAGE>

                                   Schedule 3

                            LOCATION OF REAL PROPERTY

Owned Real Property:

1.   Approximately 0.39 acres owned by InterCall, Inc. located at 802 First
     Avenue, West Point, Troup County, Georgia 31833.

2.   Approximately 2.54 acres owned by InterCall, Inc. located at 1239 O.G.
     Skinner Drive, West Point, Troup County, Georgia 31833.

3.   3300 20th Avenue, Valley, Chambers County, Alabama, owned by InterCall,
     Inc. Title to this property is subject to the following:

          (a)  Lease by Powertel, Inc. of 1,800 square feet by lease dated June
               3, 2000.

4.   Approximately 5.69 acres owned by InterCall, Inc. located at 1211 O.G.
     Skinner Drive, West Point, Troup County, Georgia 31833.

5.   401 E. 4th Street, West Point, Troup County, Georgia 31833, owned by
     InterCall, Inc.

6.   403 E. 4th Street, West Point, Troup County, Georgia 31833, owned by
     InterCall, Inc.

7.   620 Greison Trail, Newnan, Coweta County, Georgia 31833, owned by
     InterCall, Inc.

8.   Approximately 14 acres of land adjacent to O.G. Skinner Dr. (a.k.a. Pittman
     Street), West Point, Troup County, Georgia 31833, owned by InterCall, Inc.

9.   Approximately 1.63 acres located adjacent to and south of property
     described herein as 1211 O.G. Skinner Drive, West Point, Troup Count,
     Georgia 31833, owned by InterCall, Inc.

10.  11808 Miracle Hills Dr., Omaha, Douglas County, Nebraska 68154, owned by
     West Corporation and subject to that certain Mortgage Agreement, by and
     between West Corporation and First National Bank of Omaha.

11.  5031 Commerce Park Circle, Pensacola, Escambia County, Florida 32507, owned
     by West Corporation (f/k/a West TeleServices Corporation).

12.  2311 S. Illinois Ave. US Route 51, Carbondale, Jackson County, Illinois
     62901, owned by West Business Services, LP.

13.  1015 Belvidere, El Paso, El Paso County, Texas 79912, owned by West
     Business Services, LP.

14.  Buildings 1000, 2000, 3000 and 5000, 11330 IH 10 West, San Antonio, Bexar
     County, Texas 78249, owned by West Business Services, LP.

15.  Building 8000, 10940 Laureate Drive, San Antonio, Bexar County, Texas
     78349, owned by West Business Services, LP.

                                  Schedule 3-1

<PAGE>

Leased Real Property:

1.   Lease to InterCall, Inc., as lessee, for the 5th Floor, Suites 502 and 508,
     232 Madison Avenue, New York, New York 10016.

2.   Lease to InterCall, Inc., as lessee, for approximately 3,884 rsf, for One
     Glenlake Parkway, Atlanta, Georgia 30328.

3.   Lease to InterCall, Inc., as lessee, for approximately 1,353 rsf at
     Corporate Center, 110 East Broward Boulevard, Ft. Lauderdale, Florida
     33301.

4.   Lease to InterCall, Inc., as lessee, for approximately 3,715 rsf, known as
     3601 West 76th Street, Edina, Minnesota 55435.

5.   Lease to InterCall, Inc., as lessee, for approximately 1,440 rsf, known as
     Suite 150, Lake Forest Place, 4445 Lake Forest Drive, Cincinnati, Ohio
     45242.

6.   Lease to InterCall, Inc., as lessee, for approximately 3,323 rsf, known as
     Suite 1110, Prentice Point, 5299 DTC Boulevard, Englewood, Colorado 80111.

7.   Lease to InterCall, Inc., as lessee, for approximately 2,681 rsf, known as
     Suite 1060, 3 Ballston Plaza, 1100 North Glebe Road, Arlington, Virginia
     22201.

8.   Lease to InterCall, Inc., as lessee, for approximately 2,867 rsf, known as
     Suite 414, 3 Bala Plaza, Bala Cynwyd, Pennsylvania 19004.

9.   Lease to InterCall, Inc., as lessee, for approximately 4,689 rsf, known as
     Suite 210, 990 Washington Street, Dedham, Massachusetts 02026.

10.  Lease to InterCall, Inc., as lessee, for approximately 3,214 rsf, known as
     99 Cherry Hill Road, Parsippany, New Jersey 07054.

11.  Lease to InterCall, Inc., as lessee, for approximately 3,946 rsf, for
     office space at 80 Broad Street, New York, New York 10004-2009.

12.  Lease to InterCall, Inc., as lessee, for approximately 3,355 rsf, known as
     Suite 840, 433 East Las Colinas Boulevard, Irving, Texas 75039.

13.  Lease to InterCall, Inc., as lessee, for approximately 2,796 rsf at 2700
     Post Oak Boulevard, Houston, Texas 77056.

14.  Lease to InterCall, Inc., as lessee, for approximately 418 rsf, for 1001
     Southwest 5th Ave., Suite 110, Portland, Oregon 97204.

15.  Lease to InterCall, Inc., as lessee, for approximately 3,110 rsf, known as
     Suite 220, 18201 Von Karman Ave., Irvine, California 92612.

16.  Lease to InterCall, Inc., as lessee, for approximately 2,802 rsf, known as
     Suite 320 of the Denny Building, 2121 Fourth Avenue, Seattle, Washington
     98121.

                                  Schedule 3-2

<PAGE>

17.  Lease to InterCall, Inc., as lessee, for approximately 2,675 rsf, known as
     Suite 810, 425 California Street, San Francisco, California 94104.

18.  Lease to InterCall, Inc., as lessee, for approximately 5,039 rsf, known as
     300 South Tower, Peachtree 25th Building, 1718 Peachtree Street, N.W.,
     Atlanta, Georgia 30309.

19.  Lease to InterCall, Inc., as lessee, for approximately 23,261 rsf, known as
     Suites 225, 400, 413, 420, 421, 464 and 520 for premises located at
     Citicorp Plaza, 8420 West Bryn Mawr, Chicago, Illinois 60631.

20.  Lease to InterCall, Inc., as lessee, for the office space located at 3618
     West Market Street, Suite 100, Room 1, Fairlawn, Ohio 44333.

21.  Lease to InterCall Australia Pty. Ltd., as lessee, for Level 1, 187 Thomas
     Street, Sydney, New South Wales, Australia.

22.  Lease to InterCall Australia Pty. Ltd., as lessee, for Suite 1301, 227
     Collins Street, Melbourne, Victoria, Australia.

23.  Lease to InterCall Singapore Pte. Ltd., as lessee, Operation Center, for 6
     Battery Road, #10-01 049909, Singapore.

24.  Lease to InterCall, Inc., as lessee, for Suites 212 and 220, Building A,
     Trinity Court, Wokingham Road, Bracknell, RG42 1PL (UK).

25.  Lease to InterCall Conferencing Services Limited, as lessee, for offices on
     the second floor at Topeka House, Luther Challis Business Centre, Barnwood,
     Gloucester, UK.

26.  License Agreement to InterCall, Inc., as lessee, for office space at
     Kilcullen House, 1 Haigh Terrace, Dun Lioghaire, Dublin, Ireland.

27.  Lease to InterCall, Inc., as lessee, for 3131 East Camelback, Suites 268,
     269 and 270, Phoenix, Arizona 85016.

28.  Lease to InterCall, Inc., as lessee, for approximately 4,074 rsf, known as
     Suite 210, 3301 Northland Drive, Austin, Texas 78731.

29.  Lease to InterCall, Inc., as lessee, for approximately 1,752 rsf, known as
     Space 102, 5387 Manhattan Circle, Boulder, Colorado 80303.

30.  Lease to InterCall, Inc., as lessee, for approximately 3,395 rsf, known as
     Suite 206, 11340 West Olympic Boulevard, Los Angeles, California 90064.

31.  Lease to InterCall, Inc., as lessee, for office space at 80 River Street,
     Hoboken, New Jersey 07030.

32.  Office Lease between HQ Global Workplaces and InterCall, Inc., as lessee,
     dated September 2, 1999.

33.  Lease to InterCall, Inc., as lessee, for POP Site, Telecom Exchange Airdale
     Street, Auckland 1003, New Zealand.

                                  Schedule 3-3

<PAGE>

34.  Lease to InterCall, Inc., as lessee, for equipment at 2203 64th Boulevard,
     Valley, Alabama 30864.

35.  Lease to InterCall Web Conferencing Services Limited, as lessee, for office
     space at LaGrande Arche Paroi Nord, 92044, Paris La Defense, France.

36.  Lease to InterCall, Inc., as lessee, for office space at HQ Boone Boulevard
     Center, Vienna, Virginia 22182.

37.  Lease to InterCall, Inc., as lessee, for office space at HQ Francisco Bay
     Center, San Francisco, California 94111.

38.  Lease to West Telemarketing, LP, as lessee, for office space at 9910 Maple
     Street, Omaha, Nebraska 68134.

39.  Lease to West Telemarketing, LP, as lessee, for office space at 9311 N.
     93rd Street and 9218 Bedford Avenue, Omaha, Nebraska 68134.

40.  Lease to West Telemarketing, LP, as lessee, for office space at 11626
     Nicholas Street, Omaha, Nebraska 68134.

41.  Lease to West Interactive Corporation, as lessee, for office space at 9223
     Bedford Street and 3231 N. 93rd Street, Omaha, Nebraska 68134.

42.  Lease to West Facilities Corporation, as lessee, for Suite 208, 99 Railroad
     Station Plaza, Hicksville, New York 11801.

43.  Lease to West Telemarketing, LP, as lessee, for office space at 808 N.
     108th Ave., Omaha, Nebraska 68154.

44.  Lease to West Interactive Corporation, as lessee, for office space at 4015
     S. 132nd Street, Omaha, Nebraska 68137.

45.  Lease to West Telemarketing, LP, as lessee, for office space at 10606 Burt
     Street, Omaha, Nebraska 68114.

46.  Lease to West Corporation (f/k/a West TeleServices Corporation), as lessee,
     for office space at 11810 Nicholas Street, Omaha, Nebraska 68154.

47.  11650 Miracle Hills Drive, Omaha, Douglas County, Nebraska 68154, leased by
     West Corporation, as lessee, and subject to that certain Deed of Trust,
     filed at Miscellaneous Book 8070, Page 305 on 5/12/03 with the Register of
     Deeds of Douglas County, Nebraska, pursuant to the synthetic lease
     transaction (see Schedule 6.1(b)).

48.  Lease to West Corporation (f/k/a West TeleServices Corporation), as lessee,
     for space at 4645 Concord Road, Beaumont, Texas 77703.

49.  Lease to West Interactive Corporation, as lessee, for space at 1425 Champa
     Street, Denver, Colorado 80202.

                                  Schedule 3-4

<PAGE>

50.  Lease to West Interactive Corporation, as lessee, for space at 3003 Cobb
     Parkway, Atlanta, Georgia 30339.

51.  Lease to West Telemarketing, LP, as lessee, for space at 2323 W. 38th
     Street, Unit 1A, Erie, Pennsylvania 16506.

52.  Lease to West Telemarketing, LP, as lessee, for space at 227 Fox Hill Rd.,
     Unit D-8, Hampton, Virginia 23669.

53.  Lease to West Telemarketing, LP, as lessee, for space at 1545 South 77
     Sunshine Strip, Harlingen, Texas 78550.

54.  Lease to West Telemarketing, LP, as lessee, for space at 5000 Bradford
     Drive, Huntsville, Alabama 35805.

55.  Lease to West Telemarketing, LP, as lessee, for space at 1331 West Memorial
     Road, Oklahoma City, Oklahoma 73114.

56.  Lease to West Telemarketing, LP, as lessee, for space at 1315 Financial
     Blvd., Reno, Nevada 89510.

57.  Lease to West Telemarketing, LP, as lessee, for space at Harlem Alpine
     Center, 1975 Harlem Road, Loves Park, Illinois 61111.

58.  Lease to West Telemarketing, LP, as lessee, for Suite 100, 3810 S. 103rd
     East Ave., Tulsa, Oklahoma 74146.

59.  Lease to West Business Services, LP, as lessee, for space at 328 Ross Clark
     Circle, Dothan, Alabama 36303.

60.  Lease to West Interactive Corporation, as lessee, for space at 3605
     Ambassador Caffery Pkwy., Lafayette, Louisiana 70503.

61.  Lease to West Business Services, LP, as lessee, for space at 3262 Dauphin,
     Mobile, Alabama 36606.

62.  Lease to West Business Services, LP, as lessee, for the 5th Floor, 3800 E.
     42nd Street, Odessa, Texas 79762.

63.  Lease to Attention, LLC, as lessee, for space at 3432 Jefferson Ave.,
     Texarkana, Arkansas 78124 pursuant to that Assignment of Lease from West
     Telemarketing Corporation Outbound.

64.  Lease to West Business Services, LP, as lessee, for space at 2103 Universal
     City Blvd., Universal City, Texas 78148.

65.  Lease to West Business Services, LP, as lessee, for approximately 49,683
     rsf, for space at 100 West College Avenue, Appleton, Wisconsin 54911.

66.  Lease to West Business Services, LP, as lessee, for space at 1111 E. South
     River Street, Appleton, Wisconsin 54915.

                                  Schedule 3-5

<PAGE>

67.  Lease to Attention, LLC, as lessee, for space at 1000 N. Travis Street,
     Sherman, Texas 75090.

68.  Lease to Attention, LLC, as lessee, for Suite 300, 5300 Oakbrook Parkway,
     Norcross, Georgia 30093.

69.  Lease to Attention, LLC, as lessee, for space at 215 A North Sunset Blvd.,
     Sherman, Texas 75092.

70.  Lease to West Business Services, LP, as lessee, for space at S. 4300 Geiger
     Blvd., Spokane, Washington 99224.

71.  Lease to West Business Services, LP, as lessee, for space at 157 South
     Howard Street, Spokane, Washington 99201.

72.  Lease to West Business Services, LP, as lessee, for space at 5615 Dunbarton
     Ave., Pasco, Washington 99301.

73.  Lease to West Business Services, LP, as lessee, for space at 9317 E. Sinto,
     Spokane, Washington 99206.

74.  Lease to West Telemarketing Canada, ULC, as lessee, for space at 2261
     Keating X Road, Saanichton, BC V8M 2A5.

75.  Lease to West Telemarketing, LP, as lessee, for space at 7850 Anselmo Lane,
     Baton Rouge, Louisiana 70810.

76.  Lease to West Business Services, LP, as lessee, for space at 1223 Lee
     Trevino Dr., El Paso, Texas 79907.

77.  Lease to InterCall, Inc., as lessee, for Suite 202, 1804 Embarcadero Road,
     Pao Alto, California.

78.  Lease to InterCall, Inc., as lessee, for Office #'s 527, 534 and 539
     located at 8300 Boone Blvd., Suite 500, Vienna, Virginia 22182.

79.  Lease to InterCall, Inc., as lessee, for Office #'s 157, 164, 166, 167 and
     171 located at 1750 Montgomery Street, San Francisco, California 94111.

80.  Lease to ConferenceCall.com, Inc., as lessee, for Suites 214, 224 and 226
     located at 1445 MacArthur Drive, Carrollton, Texas 75007.

81.  Lease to ConferenceCall.com, Inc., as lessee, for Suite 212 located at 1445
     MacArthur Drive, Carrollton, Texas 75007.

82.  Lease to ConferenceCall.com, Inc., as lessee, for Suite 2670 located at the
     Univision Center, 2323 Bryn, Dallas, Texas 75201.

83.  Lease to Worldwide Asset Management, LLC, as lessee, for 2221 Newmarket
     Parkway, Suite 120, Marietta, Georgia 30067.

84.  Lease to Worldwide Asset Management, LLC, as lessee, for 2253 Northwest
     Parkway, Marietta, Georgia 30067.

                                  Schedule 3-6

<PAGE>

85.  Lease to Worldwide Asset Management, LLC, as lessee, for 1351 Dividend
     Drive, Marietta, Georgia 30067.

86.  Lease to Worldwide Asset Management, LLC, as lessee, for 2270 Northwest
     Parkway, Marietta, Georgia 30067.

87.  Lease to Worldwide Asset Management, LLC, as lessee, for 2150 Northwest
     Parkway, Suite L, Marietta, Georgia 30067.

88.  Lease to Worldwide Asset Management, LLC, as lessee, for 2275 Northwest
     Parkway, Suite 180, Marietta, Georgia 30067.

89.  Lease to National Asset Management Enterprises, Inc., as lessee, for 10300
     Spotsylvania Avenue, Suite 200, Fredericksburg, Virginia.

90.  Lease to National Asset Management Enterprises, Inc., as sub-lessee, for
     9911 Covington Cross Drive, Las Vegas, Nevada 89144.

91.  Lease to National Asset Management Enterprises, Inc., as sub-lessee, for
     2253 Northwest Parkway, Marietta, Georgia 30067.

92.  Lease to National Asset Management Enterprises, Inc., as lessee, for 1060
     Perimeter Road West, Endicott, New York.

93.  Lease to National Asset Management Enterprises, Inc., as lessee, for 3795
     Corporate Center Drive, St. Louis, Missouri 63045.

94.  Lease to National Asset Management Enterprises, Inc., as lessee, for 2300
     Fall Hill Avenue, Suite 511, Fredericksburg, Virginia.

95.  Lease to National Asset Management Enterprises, Inc., as lessee, for 226,
     228 and 232 Nelson Street, Cartersville, Georgia 30120.

96.  Lease to National Asset Management Enterprises, Inc., as sub-lessee, for
     2275 Northwest Parkway, Suite 180 Marietta, Georgia 30067.

97.  Lease to Asset Direct Mortgage, LLC, as sub-lessee, for 1351 Dividend
     Drive, Marietta, Georgia 30067.

98.  Lease to InterCall, Inc., as lessee, POP Site, 40 Ross Street, Glebe, New
     South Wales, 2000, Australia.

99.  Lease to InterCall, Inc., as lessee, Asia/Pacific HQ, Level 6, 154 Sussex
     Street, Sydney, New South Wales 2000, Australia.

100. Lease to InterCall, Inc., as lessee, for POP Site, Sigtel, GNCC Centre, 31
     Exeter Road, #02-00 Comcenter3, Singapore.

101. Lease to InterCall, Inc., as lessee, for POP Site, Telecom Exchange Mayoral
     Drive, Auckland, New Zealand.

                                  Schedule 3-7

<PAGE>

102. Lease to InterCall, Inc., as lessee, for Facilities F, G and I, 1318 Two
     Pacific Place, 88 Queens Way, Hong Kong.

103. Lease to InterCall, Inc., as lessee, for POP Site, PCCW Telecom House, 3
     Gloucester Road, Wanchai, Hong Kong.

104. Lease to InterCall, Inc., as lessee, for Cotswold Office, Barnwood,
     Gloucester, UK.

105. Lease to InterCall, Inc., as lessee, Operation Ctr., Regus Shinjuku Park
     Tower, N30F 3-7-1 Nishi-Shinjuk, Tokyo, Japan.

106. Lease to InterCall, Inc., as lessee, Sales Office, 195 The West Mall, Suite
     #602, Etobicoke, Canada.

107. Lease to InterCall, Inc., as lessee, Operation Ctr/Sales, 520, 10117 Jasper
     Avenue, Edmonton, Canada.

108. Lease to InterCall, Inc., as lessee, POP Site, 410 Laurier Avenue West,
     Ottawa, Canada.

109. Lease to West Telemarketing Canada, ULC, as lessee, for space at 2261
     Keating X Road, Saanichton, BC V8M 2A5.

110. Lease to Jamaica Agent Services Limited, as lessee, for Jamaica-Portmore
     Informatics Park Free Zone, Ground and 1st Floor, Portmore, Jamaica.

111. Lease to Jamaica Agent Services Limited, as lessee, for Jamaica-Montego Bay
     Export Free Zone, Building #44, Montego Bay, St. James, Jamaica.

112. Lease to West Contact Services, Inc., as lessee, Export Bank Plaza, Chino
     Roces Ave. cor Gil Puyat Ave., Floors 27, 28, 29, 34, 35, Makati City,
     Philippines.

113. Building 7000, 10931 Laureate Drive, San Antonio, Bexar County, Texas
     78349, leased by West Facilities Corporation and subject to (a) that
     certain Deed of Trust, Filing No. 20030116781, filed on 5/09/2003 with the
     Bexar County, Texas Clerk's Office, and (b) that certain Deed of Trust and
     Assignment and Assumption Agreement, filing Nos. 20010040467 and
     20030014093, filed on 3/12/2001 and 1/21/2003 with the Bexar County, Texas
     Clerk's Office, pursuant to the synthetic lease transaction (see Schedule
     6.1(b)).

                                  Schedule 3-8

<PAGE>

                                   Schedule 4

                             CHIEF EXECUTIVE OFFICES

West Corporation
11808 Miracle Hills Drive
Omaha, Nebraska 68154

West Transaction Services, LLC
11808 Miracle Hills Drive
Omaha, Nebraska 68154

West Transaction Services II, LLC
11808 Miracle Hills Drive
Omaha, Nebraska 68154

West Asset Management, Inc.
11808 Miracle Hills Drive
Omaha, Nebraska 68154

West Asset Purchasing, LLC
11808 Miracle Hills Drive
Omaha, Nebraska 68154

West Telemarketing, LP
11808 Miracle Hills Drive
Omaha, Nebraska 68154

Northern Contact, Inc.
11808 Miracle Hills Drive
Omaha, Nebraska 68154

West Telemarketing Corporation II
11808 Miracle Hills Drive
Omaha, Nebraska 68154

West Business Services, LP
10931 Laureate Drive Suite 7140
San Antonio, Texas 78249

West Interactive Corporation
11808 Miracle Hills Drive
Omaha, Nebraska 68154

West Facilities Corporation
11808 Miracle Hills Drive
Omaha, Nebraska 68154

                                  Schedule 4-1

<PAGE>

West Direct, Inc.
11808 Miracle Hills Drive
Omaha, Nebraska 68154

Attention, LLC
5300 Oakbrook Parkway Suite 300
Norcross, GA 30093

Attention III, LLC
5300 Oakbrook Parkway Suite 300
Norcross, GA 30093

InterCall, Inc.
1239 O.G. Skinner Drive
West Point, Georgia 31833

InterCall Australia Pty. Ltd.
Level 8, 155 George Street
Sydney, New South Wales, Australia

InterCall Singapore Pte. Ltd.
80 Raffles Place
#35-23 OB Plaza 1
Singapore, China

InterCall Conferencing Services Limited
Second Floor
Topeka House
Barnwood, Gloucester, UK

InterCall New Zealand Limited
Level 10 Telecom House
8 Hereford Street
Auckland 1003, New Zealand

InterCall Japan K.K.
3-28, Kioichi, Chiyoda-Ku
Tokyo, Japan 102-0094

InterCall, Inc. (Canada)
10117 Jasper Ave. Suite 520
Edmonton, Alberta
T5J 1 W8
Canada

InterCall Telecom Ventures, LLC
3300 20th Avenue
Valley, Alabama 36854

                                  Schedule 4-2

<PAGE>

InterCall Hong Kong Pty. Ltd.
1318 Two Pacific Place
88 Queensway
Hong Kong

InterCall Asia Pacific Holdings Pty. Ltd.
Level 8, 155 George Street
Sydney, New South Wales, Australia

ConferenceCall.com, Inc.
1445 MacArthur Drive, Suite 226
Carrollton, Texas 75007

West Receivable Services, Inc.
11808 Miracle Hills Drive
Omaha, Nebraska 68154

Worldwide Asset Management, LLC
2253 Northwest Parkway, Suite 500
Marietta, GA 30069

National Asset Management Enterprises, Inc.
2253 Northwest Parkway, Suite 500
Marietta, GA 30069

West International Asset Management, LLC
2253 Northwest Parkway, Suite 500
Marietta, GA 30069

Worldwide Asset Purchasing, LLC
2253 Northwest Parkway, Suite 500
Marietta, GA 30069

BuyDebtCo, LLC
2253 Northwest Parkway, Suite 500
Marietta, GA 30069

The Debt Depot, LLC
2253 Northwest Parkway, Suite 500
Marietta, GA 30069

Asset Direct Mortgage, LLC
2253 Northwest Parkway, Suite 500
Marietta, GA 30069

Portafolios NAM, S. de R.L. de C.V.
2253 Northwest Parkway, Suite 500
Marietta, GA 30069

                                  Schedule 4-3

<PAGE>

Portafolios NAM-1, S. de R.L. de C.V.
2253 Northwest Parkway, Suite 500
Marietta, GA 30069

Corporacion Gerencial de Activos, S. de R.L. de C.V.
2253 Northwest Parkway, Suite 500
Marietta, GA 30069

West Contact Services, Inc.
Exportabank Plaza
Sen. Gil Puyat & Chino Roces Ave.
Makati City, 1200, PH Philippines

Jamaican Agent Services Limited
6A Holborn Road
Kingston 10, JM Jamaica

West Telemarketing Canada, ULC
2261 Keating Cross Road
Central Saanich, CA V8M 2A5
Canada

Attention Funding Corporation
5300 Oakbrook Parkway Suite 300
Norcross, GA 30093

Attention Funding Trust
5300 Oakbrook Parkway Suite 300
Norcross, GA 30093

Legal Connect Limited
Topeka House
Luther Challis Business Centre
Gloucestershire, EN GL4 3HX
United Kingdom

                                  Schedule 4-4

<PAGE>

                                   Schedule 5

                                  LABOR MATTERS

                                      None.

                                  Schedule 5-1

<PAGE>

                                   Schedule 6

                                  INDEBTEDNESS

1.   Indebtedness of West Corporation not exceeding $12,000,000.00 in the
     aggregate pursuant to that certain Mortgage Loan, by and between West
     Corporation and First National Bank of Omaha, dated as of January 30, 1998,
     as amended as of March 8, 2002.

2.   Indebtedness in an aggregate principal amount not to exceed $41,000,000.00
     under that certain synthetic lease transaction pursuant to the Operative
     Agreements as described in that certain Participation Agreement, dated as
     of the Closing Date, by and among West Facilities Corporation, as lessee,
     Wachovia Development Corporation, as lessor, the lenders party thereto and
     Wachovia Bank, National Association.

3.   Earn-out obligations of West Corporation pursuant to that certain Purchase
     Agreement, dated as of July 23, 2002, by and among Attention, LLC, the
     Sellers (as defined therein), the Sellers' Representative (as defined
     therein) and West Corporation. Pursuant to the Attention, LLC acquisition,
     additional consideration will be payable over the four year period between
     2004 and 2008, which will range from a minimum of $21,500,000.00 to a
     maximum of $50,000,000.00 based upon Attention, LLC's satisfaction of
     certain earnings objectives during the years ending December 31, 2003
     through 2007. At December 31, 2002, the $21,500,000.00 minimum payment was
     accrued.

4.   Earn-out obligations of West Corporation pursuant to that certain Stock
     Purchase Agreement, dated as of December 7, 2001, by and between West
     Corporation and John F. Gillen, in connection with West Corporation's
     purchase of Tel Mark Sales, Inc. There is a provision for a three-year
     contingent earn-out with a maximum earn-out of $5,000,000.00 per year
     relating to the acquisition of Tel Mark Sales, Inc. in 2002. The earn-out
     obligation is based upon the acquired entity achieving certain revenue
     growth objectives. Based on the revenue growth achieved by this entity an
     accrual of $2,752,000.00 was recorded during fiscal year 2002.

5.   Indebtedness of Worldwide Asset Purchasing, LLC pursuant to an Amended and
     Restated Credit Agreement, dated as of September 30, 2004, by and between
     Worldwide Asset Purchasing, LLC and CFSC Capital Corp. XXXIV.

6.   Lease of security equipment and other related equipment under Lease No.
     001-0026055, including Lease No. 0026055-000 GA Cobb 13250, by and between
     National Asset Management Enterprises, Inc. and Ameritech Credit
     Corporation.

                                  Schedule 6-1

<PAGE>

                                    EXHIBIT 1

                                    EXHIBIT G

                                JOINDER AGREEMENT
          (Pursuant to Section 8A.10 of the Participation Agreement and
              Section 5.10 of the Credit Facility Credit Agreement)

     THIS JOINDER AGREEMENT (as amended, restated or otherwise modified, the
"Agreement"), dated as of _____________, ____, is by and among
_____________________, a ______________________ (the "Subsidiary Guarantor");
WEST CORPORATION, a Delaware corporation ("West Corp."), in its capacities as
the Credit Facility Borrower (hereinafter defined) and as one of the guarantors
pursuant to the Participation Agreement (hereinafter defined) and the Guaranty
(as defined in Appendix A to the Participation Agreement); and the various
guarantors pursuant to the Credit Facility Credit Agreement (hereinafter
defined) referenced on the signature pages hereto and the various additional
guarantors pursuant to the Participation Agreement (hereinafter defined) and the
Guaranty (as defined in Appendix A to the Participation Agreement) referenced on
the signature pages hereto; and acknowledged and accepted by WACHOVIA BANK,
NATIONAL ASSOCIATION, a national banking association ("Wachovia Bank"), in its
capacities as the Credit Facility Administrative Agent (hereinafter defined) and
as the Lease Facility Agent (hereinafter defined).

                                    RECITALS

     WHEREAS, pursuant to the Amended and Restated Credit Agreement, dated as of
November 15, 2004 (as amended, restated or otherwise modified, the "Credit
Facility Credit Agreement"), by and among West Corp., as borrower thereunder
(the "Credit Facility Borrower"), certain Domestic Subsidiaries of the Credit
Facility Borrower from time to time party thereto, as guarantors thereunder, the
entities from time to time that are parties thereto, as lenders thereunder (the
"Credit Facility Lenders") and Wachovia Bank, as administrative agent thereunder
for the Credit Facility Lenders (the "Credit Facility Administrative Agent"),
the Credit Facility Lenders have extended credit facilities in favor of the
Credit Facility Borrower and the Credit Facility Borrower has agreed to cause
certain of its Domestic Subsidiaries to join as Guarantors; and

     WHEREAS, pursuant to the Participation Agreement, dated as of May 9, 2003
(as amended, restated or otherwise modified, the "Participation Agreement"), by
and among West Facilities Corporation, a Delaware corporation, as lessee
thereunder (the "Lessee"), West Corp. and the other various entities which are
parties to the Participation Agreement from time to time as guarantors
thereunder, Wachovia Development Corporation, a North Carolina corporation, as
the borrower or the lessor thereunder (the "Lease Facility Borrower" or the
"Lessor"), the various banks and other lending institutions which are parties
thereto from time to time as lenders thereunder (subject to the definition of
Lenders in Appendix A thereto, individually, a

                                   Exhibit 1-1

<PAGE>

"Lease Facility Lender" and collectively, the "Lease Facility Lenders"), and
Wachovia Bank, National Association, a national banking association, as the
agent for the Primary Financing Parties and respecting the Security Documents,
as the agent for the Secured Parties (in such capacity, the "Lease Facility
Agent"), the Lessor and the Lease Facility Lenders have extended a lease
facility in favor of the Lessee and the Credit Parties have agreed to cause
certain of their Domestic GCA Subsidiaries to join as Guarantors.

     NOW, THEREFORE, IN CONSIDERATION of the premises and other good and
valuable consideration, the receipt and sufficiency of which is hereby
acknowledged, the parties hereto agrees as follows:

                                    SECTION 1

     Capitalized terms used in the first recital and in Section 2 hereof but not
otherwise defined herein shall have the meanings provided in the Credit Facility
Credit Agreement. Capitalized terms used in the second recital and in Section 3
hereof but not otherwise defined herein shall have the meanings provided in
Appendix A to the Participation Agreement.

                                    SECTION 2

     The Subsidiary Guarantor is a Material Domestic Subsidiary, and,
consequently, the Credit Parties are required by Section 5.10 of the Credit
Facility Credit Agreement to cause the Subsidiary Guarantor to become a
"Guarantor" thereunder.

     Accordingly, the Subsidiary Guarantor hereby agrees as follows with the
Credit Facility Administrative Agent, for the benefit of the Credit Facility
Lenders:

     1. The Subsidiary Guarantor hereby acknowledges, agrees and confirms that,
by its execution of this Agreement, the Subsidiary Guarantor will be deemed to
be a party to the Credit Facility Credit Agreement and a "Guarantor" for all
purposes of the Credit Facility Credit Agreement and the other Credit Documents,
and shall have all of the obligations of a Guarantor thereunder as if it had
executed the Credit Facility Credit Agreement and the other Credit Documents.
The Subsidiary Guarantor hereby ratifies, as of the date hereof, and agrees to
be bound by, all of the terms, provisions and conditions contained in the Credit
Documents, including without limitation (a) all of the representations and
warranties of the Credit Parties set forth in Article III of the Credit Facility
Credit Agreement and (b) all of the affirmative and negative covenants set forth
in Articles V and VI of the Credit Facility Credit Agreement. Without limiting
the generality of the foregoing terms of this paragraph 1, the Subsidiary
Guarantor hereby jointly and severally together with the other Guarantors,
guarantees to each Credit Facility Lender, the Credit Facility Administrative
Agent, the Swingline Lender and the Issuing Lender as provided in the Credit
Facility Credit Agreement the prompt payment and performance of the Credit Party
Obligations in full when due (whether at stated maturity, as a mandatory
prepayment, by acceleration, as a mandatory cash collateralization or otherwise)
strictly in accordance with the terms thereof and agrees that if any of such
Credit Party Obligations are not paid or performed in full when due (whether at
stated maturity, as a

                                   Exhibit 1-2

<PAGE>

mandatory prepayment, by acceleration, as a mandatory cash collateralization or
otherwise), the Subsidiary Guarantor will, jointly and severally together with
the other Guarantors, promptly pay and perform the same, without any demand or
notice whatsoever, and that in the case of any extension of time of payment or
renewal of any of the Credit Party Obligations, the same will be promptly paid
in full when due (whether at extended maturity, as a mandatory prepayment, by
acceleration, as a mandatory cash collateralization or otherwise) in accordance
with the terms of such extension or renewal.

     2. The Subsidiary Guarantor acknowledges and confirms that it has received
a copy of the Credit Facility Credit Agreement and the schedules and exhibits
thereto. The information on the schedules to the Credit Facility Credit
Agreement is hereby amended to provide the information shown on the attached
Schedule A.

     3. The Credit Facility Borrower and the Guarantors confirm that all of
their obligations under the Credit Facility Credit Agreement are, and upon the
Subsidiary Guarantor becoming a Guarantor, shall continue to be, in full force
and effect. The parties hereto confirm and agree that immediately upon the
Subsidiary Guarantor becoming a Guarantor, the term "Credit Party Obligations,"
as used in the Credit Facility Credit Agreement, shall include all obligations
of such Subsidiary Guarantor under the Credit Facility Credit Agreement and
under each other Credit Document.

     4. The Subsidiary Guarantor hereby agrees that upon becoming a Guarantor it
will assume all Credit Party Obligations of a Guarantor as set forth in the
Credit Facility Credit Agreement.

     5. Each of the Credit Facility Borrower and the Subsidiary Guarantor agrees
that at any time and from time to time, upon the written request of the Credit
Facility Administrative Agent, it will execute and deliver such further
documents and do such further acts and things as the Credit Facility
Administrative Agent may reasonably request in order to effect the purposes of
this Agreement.

                                    SECTION 3

     The Subsidiary Guarantor is a Material Domestic GCA Subsidiary, and,
consequently, the Credit Parties are required by Section 8A.10 of the
Participation Agreement to cause the Subsidiary Guarantor to become a
"Guarantor" thereunder and under the Guaranty (as defined in Appendix A to the
Participation Agreement).

     Accordingly, the Subsidiary Guarantor hereby agrees as follows with the
Lease Facility Agent, for the benefit of the Financing Parties:

     1. The Subsidiary Guarantor hereby acknowledges, agrees and confirms that,
by its execution of this Agreement, the Subsidiary Guarantor will be deemed to
be a party to the Participation Agreement, the Guaranty and the other Operative
Agreements to which any of the Guarantors is a party and a "Guarantor" for all
purposes of the Participation Agreement, the

                                   Exhibit 1-3

<PAGE>

Guaranty and the other Operative Agreements, and shall have all of the
obligations of a Guarantor thereunder as if it had executed the Participation
Agreement, the Guaranty and the other Operative Agreements to which any of the
Guarantors is a party. The Subsidiary Guarantor hereby ratifies, as of the date
hereof, and agrees to be bound by, all of the terms, provisions and conditions
contained in the Operative Agreements, including without limitation (a) all of
the representations and warranties of the Credit Parties set forth in Section
6.3 of the Participation Agreement and Section 2 of the Guaranty and (b) all of
the affirmative and negative covenants set forth in Section 8A and 8B of the
Participation Agreement. Without limiting the generality of the foregoing terms
of this paragraph 1, the Subsidiary Guarantor hereby jointly and severally
together with the other Guarantors, guarantees to each Financing Party, as
provided in the Guaranty the prompt payment and performance of the Guaranteed
Obligations in full when due (whether at stated maturity, as a mandatory
prepayment, by acceleration, as a mandatory cash collateralization or otherwise)
strictly in accordance with the terms thereof and agrees that if any of such
Guaranteed Obligations are not paid or performed in full when due (whether at
stated maturity, as a mandatory prepayment, by acceleration, as a mandatory cash
collateralization or otherwise), the Subsidiary Guarantor will, jointly and
severally together with the other Guarantors, promptly pay and perform the same,
without any demand or notice whatsoever, and that in the case of any extension
of time of payment, performance or renewal of any of the Guaranteed Obligations,
the same will be promptly paid or performed in full when due (whether at
extended maturity, as a mandatory prepayment, by acceleration, as a mandatory
cash collateralization or otherwise) in accordance with the terms of such
extension or renewal.

     2. The Subsidiary Guarantor acknowledges and confirms that it has received
a copy of the Participation Agreement, the Guaranty, each other Operative
Agreement requested by the Subsidiary Guarantor and the respective schedules and
exhibits thereto. The information on the schedules to the Participation
Agreement is hereby amended to provide the information shown on the attached
Schedule A.

     3. West Corp. and the Guarantors confirm that all of their obligations
under the Operative Agreements are, and upon the Subsidiary Guarantor becoming a
Guarantor, shall continue to be, in full force and effect. The parties hereto
confirm and agree that immediately upon the Subsidiary Guarantor becoming a
Guarantor, the term "Guaranteed Obligations," as used in the Operative
Agreements, shall include all obligations of such Subsidiary Guarantor under the
Participation Agreement, the Guaranty and under each other Operative Agreement.

     4. The Subsidiary Guarantor hereby agrees that upon becoming a Guarantor it
will assume all Guaranteed Obligations of a Guarantor.

     5. Each of West Corp. and the Subsidiary Guarantor agrees that at any time
and from time to time, upon the written request of the Lease Facility Agent, it
will execute and deliver such further documents and do such further acts and
things as the Lease Facility Agent may reasonably request in order to effect the
purposes of this Agreement.

                                   Exhibit 1-4

<PAGE>

                                    SECTION 4

     1. This Agreement may be executed in two or more counterparts, each of
which shall constitute an original but all of which when taken together shall
constitute one contract.

     2. This Agreement shall be governed by and construed and interpreted (a) in
connection with Section 2 and the other provisions of this Agreement which
relate to the Credit Facility Credit Agreement, in accordance with the laws of
the State of New York and (b) in connection with Section 3 and the other
provisions of this Agreement which relate to the Operative Agreements, in
accordance with the laws of the State of North Carolina.

                                   Exhibit 1-5

<PAGE>

     IN WITNESS WHEREOF, each of the parties hereto has caused this Agreement to
be duly executed by its authorized officer, the Credit Facility Administrative
Agent, for the benefit of the Credit Facility Lenders, has caused the same to be
accepted by its authorized officer and the Lease Facility Agent, for the benefit
of the Financing Parties (as such term is defined Appendix A to the
Participation Agreement), has caused the same to be accepted by its authorized
officer, in each case, as of the day and year first above written.

SUBSIDIARY GUARANTOR:

                                        [SUBSIDIARY GUARANTOR]

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

CREDIT FACILITY BORROWER
AND A GUARANTOR PURSUANT TO
THE PARTICIPATION AGREEMENT
AND THE GUARANTY (AS DEFINED IN
APPENDIX A TO THE PARTICIPATION
AGREEMENT):

                                        WEST CORPORATION, a Delaware corporation

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

GUARANTORS PURSUANT
TO THE CREDIT FACILITY
CREDIT AGREEMENT, THE
PARTICIPATION AGREEMENT
AND THE GUARANTY (AS
DEFINED IN APPENDIX A TO THE
PARTICIPATION AGREEMENT):

                                        [EXISTING GUARANTORS]

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

                                   Exhibit 1-6

<PAGE>

Acknowledged and accepted:

WACHOVIA BANK, NATIONAL
ASSOCIATION, as the Credit Facility
Administrative Agent and as the Lease
Facility Agent

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

                                   Exhibit 1-7

<PAGE>

                                   SCHEDULE A

                   Additional Information for Schedules to the
         Credit Facility Credit Agreement, Participation Agreement, Etc.

                                   Exhibit 1-8

<PAGE>

                                    EXHIBIT 2

                                  Schedule 2.1

<TABLE>
<CAPTION>
                                          Lender Commitment
                                     ---------------------------
                                         Amount       Percentage
                                     --------------   ----------
<S>                                  <C>              <C>
Wachovia Capital Investments, Inc.   $ 4,250,000.00    40.6012%
c/o Wachovia Securities, Inc.
One Wachovia Center
301 South College Street
Charlotte, North Carolina 28288
Attention: Gabrielle Braverman
Telephone: (704) 383-1967
Telecopy: (704) 383-8108

CommerceBank N.A.                    $ 6,000,000.00    59.3988%
c/o Corporate Banking
11 East 51st Street
New York, New York 10022
Attention: Lourdes Jordan
Telephone: (212) 891-7463
Telecopy: (212) 891-7761

TOTAL                                $10,250,000.00     100.00%
</TABLE>

                                   Exhibit 2-1

<PAGE>

                                    EXHIBIT 3

                         ENTITIES RELEASED AS GUARANTORS

Worldwide Asset Purchasing, LLC

                                   Exhibit 3-1<PAGE>
                                                                    EXHIBIT 10.1

Confidential treatment has been requested for portions of this Exhibit. The copy
filed herewith omits the information subject to the confidentiality request.
Omissions are designated by ***. A complete version of this exhibit has been
filed separately with the Securities and Exchange Commission.

                                LICENSE AGREEMENT

                                 BY AND BETWEEN

                               CHICAGO LABS, INC.

                                       AND

                         SPECTRUM PHARMACEUTICALS, INC.

<PAGE>

                                LICENSE AGREEMENT

         THIS LICENSE AGREEMENT (this "AGREEMENT"), entered into as of February
18, 2005 (the "EFFECTIVE DATE"), by and between CHICAGO LABS, INC., an Illinois
corporation ("CHICAGO LABS"), and SPECTRUM PHARMACEUTICALS, INC., a Delaware
corporation ("SPECTRUM"). Chicago Labs and Spectrum may each be referred to
herein individually as a "PARTY" and collectively as the "PARTIES."

                                    RECITALS

         A. Whereas, Chicago Labs is the exclusive worldwide licensee under the
University License Agreement (defined below) for the patent rights and know-how
owned by University to an invention (the "Invention") entitled "Evidence for
prevention and therapeutic use of endothelin ET-B receptor antagonists in breast
tumor" and has developed additional know-how concerning the Invention.

         B. Whereas, the Invention is the subject of United States patent
application entitled "Method and composition for preventing and treating solid
tumors," US Patent application publication number US 2004/0138121A1, publication
date July 15, 2004; and the international application published under the Patent
Cooperation Treaty, international publication number WO 2004/037235 A2,
international publication date May 6, 2004; both owned by the Board of Trustees
of the University of Illinois.

         C. Whereas, Spectrum is engaged in the development and eventual
marketing, sale and licensing of pharmaceutical products and desires to have
access to the Invention and Chicago Labs' proprietary discoveries and
technologies relating to the Invention.

         D. Whereas, Chicago Labs and Spectrum desire to enter into a license
agreement whereby Spectrum shall obtain the right to use the Invention and
Chicago Labs' proprietary discoveries and technologies relating to the Invention
to develop and commercialize products or methods for the prevention and/or
treatment of cancer.

         NOW, THEREFORE, in consideration of the mutual covenants and conditions
set forth herein, Chicago Labs and Spectrum hereby agree as follows:

                                    AGREEMENT

1. DEFINITIONS. Capitalized terms shall have the meaning set forth below.

         1.1 AFFILIATE. The term "Affiliate" shall mean any entity which
directly or indirectly controls, is controlled by, or is under common control
with Spectrum or Chicago Labs, as applicable. The term "control" as used in this
definition means having (i) more than fifty percent (50%) ownership of the
assets,

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<PAGE>

profit interest or outstanding voting securities or (ii) the power to direct or
cause the direction of the management and the policies of an entity, whether by
contract or otherwise.

         1.2 CHICAGO LABS KNOW-HOW. The term "Chicago Labs Know-how" shall mean
Chicago Labs methods, processes, techniques and data that relate to the Chicago
Labs Patent Rights or the Chicago Labs Materials which are necessary or useful
for researching, developing, manufacturing, using or selling a Product, now or
in the future owned or Controlled by Chicago Labs, whether or not: (i) the same
is eligible for protection under the patent laws of the United States or
elsewhere; (ii) enforceable as a trade secret; or (iii) the copying of which
would be enjoined or restrained by a court as constituting unfair competition.
The Chicago Labs Know-how in existence as of the Effective Date is contained in
the documents listed in the attached Exhibit A.

         1.3 CHICAGO LABS MATERIALS. The term "Chicago Labs Materials" shall
mean the materials provided by Chicago Labs to Spectrum under this Agreement as
set forth in Exhibit B, as the same may be amended by the Parties from time to
time.

         1.4 CHICAGO LABS PATENT RIGHTS. The term "Chicago Labs Patent Rights"
shall mean United States patent application entitled "Method and composition for
preventing and treating solid tumors," US Patent application publication number
US 2004/0138121A1, publication date July 15, 2004; and the international
application published under the Patent Cooperation Treaty, international
publication number WO 2004/037235 A2, international publication date May 6,
2004; all rights (including without limitation all US and foreign Patents)
arising out of or resulting from such patent applications; and any other U.S.
and foreign Patents now or in the future owned or Controlled by Chicago Labs
having claims covering or directed to the Inventions, the Chicago Labs Know-how,
the Chicago Labs Materials or the preventative and/or therapeutic use of
endothelin ET-B receptor antagonists and/or agonists in cancer related
applications.

         1.5 CHICAGO LABS TECHNOLOGY. The term "Chicago Labs Technology" shall
mean the Chicago Labs Patent Rights, Chicago Labs' rights arising out of or
resulting from Patents to Joint Inventions and Improvements, Chicago Labs
Know-how and Chicago Labs Materials.

         1.6 CONFIDENTIAL INFORMATION. The term "Confidential Information" shall
mean all know-how, trade secrets and other proprietary or confidential
information of a disclosing Party or held by the disclosing Party under an
obligation of confidentiality to a Third Party, which may be disclosed from one
Party to the other Party at any time and from time to time during the term of
this Agreement. "Confidential Information" shall include the terms of this
Agreement as well as any proprietary or confidential information that is jointly
owned by the Parties. Information shall not be considered Confidential
Information to the extent such information:

                                       2
<PAGE>

         (a)      is known by the receiving Party at the time of its receipt,
                  and not through a prior disclosure by the disclosing Party, as
                  documented by business records;

         (b)      is properly in the public domain;

         (c)      is subsequently disclosed to the receiving Party by a Third
                  Party who may lawfully do so and is not under an obligation of
                  confidentiality to the disclosing Party; or

         (d)      is developed by the receiving party independently of
                  Confidential lnformation received from the disclosing Party,
                  as documented by research and development records.

Nothing in this definition shall preclude a Party from use or disclosure of any
proprietary or Confidential Information owned by that Party where the other
Party has no rights of ownership.

         1.7 CONTROLLED. The term "Controlled" shall mean possessing the ability
to grant a license or sublicense without violating (i) any applicable law or
governmental regulation or (ii) the terms of an agreement with a Third Party
that has an effective date which predates the Effective Date hereof.

         1.8 DEVELOPMENT COMMITTEE. The term "Development Committee" shall have
the meaning given such term in Section 2.1.

         1.9 EMEA. The term "EMEA" shall mean the European Agency for the
Evaluation of Medicinal Products, any successor agency thereto (European
Medicines Agency) or any equivalent replacement agency having substantially the
same functions.

         1.10 EVENT OF DEFAULT. The term "Event of Default" shall have the
meaning set forth in Section 11.4.1 of this Agreement.

         1.11 FDA. The term "FDA" shall mean the United States Food and Drug
Administration, or any successor agency thereto.

         1.12 FIRST COMMERCIAL SALE. The term "First Commercial Sale" shall
mean, with respect to any Product, the first sale for end use or consumption of
such Product in a country after all required approvals, including marketing and
pricing approvals, have been granted by the governing Regulatory Authority of
such country.

         1.13 GAAP. The term "GAAP" shall mean generally accepted accounting
principles in the United States or International Accounting Standards outside
the United States, in each case as consistently applied by Spectrum, its
Affiliates, its sublicensees or its distributors in their respective financial
statements, audited if applicable.

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<PAGE>

         1.14 IMPROVEMENTS. The term "Improvements" shall mean one or more
enhancements, improvements or modifications in the manufacture, formulation,
conjugations, ingredients, preparation, dosage, administration or packaging of a
Product or the Chicago Labs Technology.

         1.15 IND. The term "IND" shall mean (i) an Investigational New Drug
application as defined in the United States Food, Drug & Cosmetic Act and
applicable regulations promulgated thereunder, as amended from time to time or
(ii) an equivalent application or filing with the applicable Regulatory
Authority in any country other than the United States allowing the commencement
of human clinical trials.

         1.16 INVENTION. The term "Invention" is defined in Recital A above.

         1.17 JOINT INVENTIONS. The term "Joint Inventions" shall have the
meaning set forth in Section 5.1 of this Agreement.

         1.18 JOINT PATENT. The term "Joint Patent" shall mean any Patent filed
with respect to a Joint Invention.

         1.19 LICENSED FIELD. The term "Licensed Field" shall mean the
prevention and/or treatment of cancer.

         1.20 MILESTONE PAYMENT. The term "Milestone Payment" shall mean the
payments from Spectrum to Chicago Labs under Section 4.4.

         1.21 NDA. The term "NDA" shall mean a New Drug Application, as defined
in the United States Food, Drug & Cosmetic Act and applicable regulations
promulgated thereunder, as amended from time to time, to obtain approval from
the FDA for commercial sale of a Product, or an equivalent application or filing
with the applicable Regulatory Authority in any country other than the United
States.

         1.22 NET SALES. The term "Net Sales" shall mean the amount received by
Spectrum, its Affiliates, its sublicensees or distributors on account of sales
of a Product to Third Parties in the Territory, less the following deductions to
the extent actually allowed or specifically allocated to the Product by the
selling party using GAAP and not separately invoiced: (i) sales and excise taxes
and duties paid or allowed by the selling party and any other governmental
charges imposed upon the production, importation, use or sale of such Product;
(ii) customary trade, quantity and cash discounts allowed on Product; (iii)
allowances or credits to customers on account of rejection or return of Product
or on account of retroactive price reductions affecting such Product; (iv)
freight and insurance costs; (v) rebates, chargebacks and other amounts paid on
sale or dispensing of the Product; and (vi) the booked cost of devices or
systems used for delivering a Product into the patient where the Product when
sold is a

                                       4

<PAGE>

combination of the active pharmaceutical ingredient and the device or system.
For the avoidance of doubt, for each Product the Net Sales shall be calculated
only once for the first sale of such Product by either Spectrum, its Affiliate,
its sublicensee or its distributor, as the case may be, to a Third Party which
is neither an Affiliate, sublicensee or distributor of Spectrum. A sale of
Products by Spectrum, its Affiliate, its sublicensee or its distributor to a
wholesaler shall be regarded as the first sale of the Product for the purpose of
calculating Net Sales unless such sale is made by one of them directly to a
hospital, pharmacy, physician, retailer or other entity which provides the
Product to the patient in which case the first sale shall be the sale to such
hospital, pharmacy, physician, retailer or other entity. Net Sales shall not
include the amount received on account of sales of a Product or of sales of a
Product in a particular country for which the term of this Agreement has expired
in accordance with Section 11.1 on or before the date of the invoice for such
sales.

         1.23 PATENT. The term "Patent" shall mean any and all unexpired patent
applications, provisional patent applications and any patent issuing therefrom
worldwide, together with any extensions, registrations, confirmations, reissues,
continuations, divisions, continuations-in-part, reexamination certificates,
confirmations, registrations, revalidations, additions, supplementary protection
certificates, substitutions or renewals thereof and any patents anywhere in the
world, claiming the priority date of any of the foregoing.

         1.24 PHASE I CLINICAL TRIAL. The term "Phase I Clinical Trial" shall
mean those further and lawful studies of a Product conducted anywhere in the
Territory that the applicable Regulatory Authority requires to be performed on a
sufficient number of healthy human patients to generate sufficient data to
establish the safety and biological activity of that Product, and to permit
commencement of a Phase II Clinical Trial.

         1.25 PHASE II CLINICAL TRIAL. The term "Phase II Clinical Trial" shall
mean those further and lawful studies of a Product conducted anywhere in the
Territory that the applicable Regulatory Authority requires to be performed on a
sufficient number of human patients with the condition treated by the Product to
generate sufficient data to establish the safety, and biological activity of
that Product for its intended use and to permit commencement of a Phase III
Clinical Trial.

         1.26 PHASE III CLINICAL TRIAL. The term "Phase III Clinical Trial"
shall mean those controlled and lawful studies of a Product conducted anywhere
in the Territory on sufficient numbers of patients with the condition treated by
the Product that are prospectively designed, using predetermined endpoints, to
demonstrate clinically and statistically the efficacy and safety of that Product
for one or more indications as a pivotal study intended to lead to regulatory
approval of such Product for such indication or indications.

         1.27 PRODUCT. The term "Product" shall mean any product, including
products under

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<PAGE>

development and products approved by a Regulatory Authority, that includes, is
based upon or is derived from the Chicago Labs Technology. The term "Products"
shall mean more than one Product.

         1.28 PRODUCT LICENSE. The term "Product License" shall have the meaning
set forth in Section 3.1.

         1.29 REGULATORY AUTHORITY. The term "Regulatory Authority" shall mean
the principal governmental organization or agency that has the right to approve
the sale and, if applicable price, of Products in a given country, including,
without limitation, the FDA, the EMEA and the Ministry of Health, Labour and
Welfare in Japan.

         1.30 ROYALTY TERM. The term "Royalty Term" shall have the meaning set
forth in Section 4.5.5.

         1.31 SUBLICENSE. The terms "Sublicense" and "Sublicenses" shall have
the meanings set forth in Section 3.2.

         1.32 TERRITORY. The term "Territory" shall mean all of the countries in
the world (including their territories and possessions).

         1.33 THIRD PARTY. The term "Third Party" shall mean any person or
entity other than a Party hereto or an Affiliate.

         1.34 UNIVERSITY. The term "University" shall mean the Board of Trustees
of the University of Illinois.

         1.35 UNIVERSITY LICENSE AGREEMENT. The term "University License
Agreement" shall mean the Exclusive License Agreement dated August 15, 2003
between Chicago Labs and the University, a certified copy of which has been
delivered to Spectrum concurrent with the execution of this Agreement, as may be
amended from time to time as permitted by this Agreement.

         1.36 VALID CLAIM. The term "Valid Claim" shall mean a claim in any
unexpired, issued patent within the Chicago Labs Patent Rights which has not
been held invalid and/or unenforceable in a decision by a court or other body of
competent jurisdiction from which there is no appeal or, if appealable, from
which no appeal has been taken.

2. RESEARCH AND DEVELOPMENT PROGRAM.

         2.1 DEVELOPMENT COMMITTEE. After the Effective Date, Spectrum shall
establish a committee (the "DEVELOPMENT COMMITTEE") to be responsible for
planning, overseeing and directing the development and commercialization of, and
regulatory filings relating to, Products. One representative

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<PAGE>

from Chicago Labs shall be allowed to participate in all meetings of the
Development Committee on a consultative basis and to receive copies of all
minutes, if any, of the Development Committee's deliberations. The Development
Committee shall meet at least quarterly until such time as the first NDA for a
Product is filed and then as appropriate to keep the Parties' representatives
informed thereafter. The President of Chicago Labs shall appoint Chicago Labs'
representative and may change such representative from time to time on written
notice to Spectrum.

3. PRODUCT LICENSE.

         3.1 PRODUCT LICENSE. Chicago Labs hereby grants to Spectrum an
exclusive (even as to Chicago Labs), right and license under Chicago Labs'
rights to use the Chicago Labs Technology to develop, make, have made, use,
offer for sale, sell, have sold, distribute, import, and export Products in the
Licensed Field in the Territory (the "PRODUCT LICENSE"). Spectrum acknowledges
that (i) Chicago Labs' rights to use "Know How" under the University License
Agreement are nonexclusive and (ii) the grant of rights under the Chicago Labs
Patent Rights is qualified by the scope of the claims under the Patents included
in such Chicago Labs Patent Rights. The Product License shall not be construed
to confer any rights upon Spectrum by implication, estoppel or otherwise as to
any technology not included in the Chicago Labs Technology. Notwithstanding any
other provisions of this Agreement, Chicago Labs retains the rights to use and
license Chicago Labs Know-how outside the Licensed Field. In addition, Chicago
Labs hereby grants to Spectrum an exclusive (even as to Chicago Labs),
perpetual, royalty-free, license to any Product that may be used for the
diagnosis of cancer that was developed by Spectrum using the Chicago Labs
Know-how. The use of the Chicago Labs Know-how to develop such a Product shall
not be a breach by Spectrum of the terms of this Agreement.

         3.2 SUBLICENSES. Spectrum shall have the right, but not the obligation,
to grant sublicenses (one a "Sublicense; more than one "Sublicenses") under the
Product License to its Affiliates and Third Parties, provided, however, that any
such sublicense shall be subject to and in all material respects consistent with
the material terms and conditions of this Agreement, including but not limited
to the following:

             3.2.1 Termination. Every Sublicense shall contain a statement
describing the date upon which Chicago Lab's exclusive rights, privileges and
license under the University License Agreement shall terminate.

             3.2.2 Binding Terms From University License Agreement. Spectrum
shall be bound by the obligations of Chicago Labs of Articles 5, 7.1, 7.3, 8, 9,
10 and 15.4 of the University License Agreement as if it were a party to the
University License Agreement. Spectrum acknowledges that Chicago Labs has
provided it with a certified true copy of the University License Agreement
containing such Articles. Further any Sublicenses granted by Spectrum shall
provide that the obligations

                                       7

<PAGE>

to Chicago Labs of such Articles shall be binding upon the sublicensee as if it
were a party to the University License Agreement. Spectrum shall attach copies
of such Articles to all Sublicenses or faithfully reproduce such Articles within
such Sublicenses.

             3.2.3 Copy of Sublicenses. Spectrum shall forward to University and
Chicago Labs a copy of any and all fully executed Sublicenses, and shall forward
to Chicago Labs *** a copy of such reports received by Spectrum from its
sublicensees during the preceding *** period under the Sublicenses as shall be
pertinent to a royalty accounting under said Sublicenses. Spectrum may redact
from such Sublicenses any terms that are not relevant to the Products so long as
the terms that are relevant to the Products, including the terms related to the
royalties payable on such Products thereunder, remain comprehensible. In the
event that the terms of a Third Party agreement prevent Spectrum from providing
a copy of Spectrum's Sublicense with the Third Party, Spectrum shall provide a
summary in sufficient detail to enable Chicago Labs to calculate and verify the
royalties payable to Chicago Labs with respect to such Sublicense.

         3.3 UNIVERSITY LICENSE AGREEMENT. Spectrum acknowledges that under the
University License Agreement, University retained the right to practice the
Chicago Labs Patent Rights and Know How (as defined in Articles 1.13 and 1.8
respectively of the University License Agreement) for its own non-commercial
teaching and research activities, the results of which shall not be used for any
commercial purpose without the prior consent of Chicago Labs. Chicago Labs shall
not grant such consent to University without the prior written consent of
Spectrum which shall not be unreasonably withheld, provided that it shall not be
considered unreasonable for Spectrum to withhold its consent if the commercial
purpose might compete with the Products or any products that Spectrum develops
or markets, directly or indirectly.

         3.4 MATERIAL TRANSFER.

             3.4.1 Chicago Labs Materials. Chicago Labs shall transfer those
Chicago Labs Materials, if any, described in Exhibit B to Spectrum together with
the data related thereto on or about the delivery dates set forth in Exhibit B.
Spectrum shall also have the right to further transfer the Chicago Labs
Materials transferred hereunder to its Affiliates or sublicensees, solely in
accordance with Sections 3.2 and 3.4, under a sublicense or material transfer
agreement consistent with the terms of this Agreement.

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<PAGE>

             3.4.2 Transfer and Use. The Parties shall mutually agree on the
method for packaging and delivering Chicago Labs Materials, and Chicago Labs
transferring its materials to Spectrum which shall bear all costs of generating,
preparing, packaging and delivering such materials. Each Party understands and
agrees that Chicago Labs Materials may have unpredictable and unknown biological
and/or chemical properties and that they are to be used with caution. Spectrum,
its Affiliates and sublicensees will use Chicago Labs Materials subject to the
terms of this Agreement, and in material compliance with applicable laws and
regulations, including but not limited to, any laws or regulations relating to
the research, testing, production, storage, transportation, export, packaging,
labeling or other authorized use of such materials.

4. FINANCIAL TERMS AND CONDITIONS.

         4.1 INITIAL FEE. Spectrum shall pay to Chicago Labs a fee of One
Hundred Thousand Dollars ($100,000). Such payment shall be made within *** days
after the Effective Date.

         4.2 INITIAL RESEARCH AND DEVELOPMENT FUNDING ESTIMATES AND ADDITIONAL
PAYMENTS. The Parties estimate that the development costs required to complete a
work program consisting of completion of preclinical testing and filing an IND
to be approximately *** to ***. Beginning on the date *** after the Effective
Date, Spectrum shall pay to Chicago Labs ***. Furthermore, ***.

         4.3 PRODUCT LICENSE FEE. Subject to Section 11.5(d) and provided there
has been a U.S. Patent issued upon United States patent application entitled
"Method and composition for preventing and treating solid tumors," US Patent
application publication number US 2004/0138121A1; publication date July 15,
2004, upon the enrollment of the first patient in a Phase II Clinical Trial by
Spectrum, Spectrum shall pay to Chicago Labs *** in *** installments of ***. The
first such payment shall be made not later than *** after the enrollment of the
first patient in the Phase II Clinical Trial. If for any reason a US Patent
issues after the enrollment of such first patient, Spectrum shall pay to Chicago
Labs within *** of the issuance of the Patent all of the *** installments that
would have been due and payable had a US Patent been issued at the time of such
enrollment and shall thereafter continue such payments until Spectrum has paid
Chicago Labs the full ***. Spectrum shall pay to Chicago Labs each *** payment
before the *** in which the payment is due.

         4.4 MILESTONE PAYMENTS. Spectrum shall pay to Chicago Labs the
following one-time payments (one time regardless of the number of Products)
within *** of the achievement of each of the following events:

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<PAGE>

<TABLE>
<CAPTION>
                                                                                                           Milestone
                                            Milestone                                                        Payment
                                            ---------                                                      ---------
                  <S>                                                                                      <C>
                  A.     First approval of an NDA for a Product by the FDA                                       ***

                  B.     First approval of an NDA for a Product by the EMEA                                      ***

                  C.     First Approval of an NDA for a Product by the Ministry of Health,                       ***
                         Labour and Welfare in Japan

                  D.     Approval of the *** for a Product by the FDA                                            ***

                  E.     Approval of the *** for a Product by the EMEA                                           ***

                  F.     Approval of the *** for a Product by the Ministry of Health, Labour and                 ***
                         Welfare in Japan

                  G.     Annual Net Sales of a Product in *** of ***                                             ***

                  H.     Annual Net Sales of a Product in *** of ***                                             ***

                  I.     Annual Net Sales of a Product in *** of ***                                             ***
</TABLE>

4.5 PRODUCT ROYALTIES.

             4.5.1 Patent Royalties. During the Royalty Term, Spectrum shall pay
Chicago Labs the following royalties on the aggregate annual Net Sales of each
Product sold by Spectrum, its Affiliates and any Third Party sublicensees in the
Territory during each calendar year:

             *** percent (***%) of annual Net Sales up to and including ***; and

             *** percent (***%) of annual Net Sales greater than ***.

The applicable royalty rate determined above shall be applied to the Net Sales
in each country where there is a Valid Claim covering the Product, as determined
on a Product-by-Product and country-by-country basis. Multiple royalties shall
not be earned or paid on a particular Product if such Product or its
manufacture, use, importation or sale is covered by more than one Valid Claim.

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             4.5.2 Step-Down Royalty. After the expiration of the Royalty Term
for a country and in consideration of the grant by Chicago Labs to Spectrum of
the rights under this Agreement to Chicago Labs Know-how, for a period of *** or
until there is generic competition within such country, whichever comes first,
Spectrum shall pay Chicago Labs the following royalties on the aggregate annual
Net Sales of each such Product sold by Spectrum, its Affiliates and any Third
Party sublicensees in the Territory during each calendar year:

             *** percent (***%) of annual Net Sales up to and including ***; and

             *** percent (***%) of annual Net Sales greater than ***.

The applicable royalty rate shall be determined on a Product-by-Product and
country-by-country basis.

             4.5.3 Know-How Royalties. For the period of *** from the First
Commercial Sale of each Product in each country where there is no Valid Claim
covering the Product or until there is generic competition in such country,
whichever comes first, Spectrum shall pay Chicago Labs the following royalties
on the aggregate annual Net Sales of each such Product sold by Spectrum, its
Affiliates and any Third Party sublicensees in the Territory during each
calendar year:

             *** percent (***%) of annual Net Sales up to and including ***; and

             *** percent (***%) of annual Net Sales greater than ***.

The applicable royalty rate determined above shall be applied to the Net Sales
in each country where there is no Valid Claim covering the Product, as
determined on a Product-by-Product and country-by-country basis.

             4.5.4 ***

             4.5.5 Royalty Term. The "ROYALTY TERM" shall begin on the First
Commercial Sale of a particular Product in a particular country and expire on
the expiration of the last Valid Claim covering such Product in that country, as
determined on a Product-by-Product basis and a country-by-country basis.

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             4.5.6 Royalty Offsets. In the event that royalty payments are owed
by Spectrum to Third Parties with respect to licenses necessary to use, develop,
manufacture or sell a Product and such royalty payments exceed *** percent
(***%) of Net Sales, the royalties owed to Chicago Labs under Section 4.5.1
shall be reduced by the amount of the royalty payments actually paid by Spectrum
to such Third Parties provided that such reductions shall not exceed *** of the
royalties due Chicago Labs under such Section in such country for the reporting
period. ***

             4.5.7 Sublicense Income. In case Spectrum grants sublicenses under
Section 3.2 hereof, Spectrum shall pay to Chicago Labs (A) if before ***, ***
percent (***%) or (B) if after ***, *** percent (***%), of any lump sum,
periodic or other consideration (other than royalties based on Net Sales)
received by Spectrum from sublicensees including, but not limited to, any
upfront fees, sublicense fees, or other consideration paid for the authorization
to use the Chicago Labs Technology to develop, make, have made, use, offer for
sale, sell, have sold, distribute, import, and export Products in the Licensed
Field in the Territory. Notwithstanding anything else contained herein, upon
receipt by Spectrum of any payment from a sublicensee upon the achievement of
any applicable milestone (a "SUBLICENSEE MILESTONE"), (i) if the Sublicensee
Milestone is also a milestone described in Section 4.3 or 4.4, Spectrum shall
make the applicable milestone payment under Section 4.3 or 4.4 to Chicago Labs
and (ii) the payment received by Spectrum from such sublicensee shall be treated
as sublicense income and subject to the first sentence of this Section 4.5.7;
provided that Spectrum may deduct any payment made pursuant to clause (i) of
this from such sublicense income before calculating the percentage owed to
Chicago Labs pursuant to this Section 4.5.7 in determining Spectrum's obligation
under this Section. Spectrum may only deduct from such sublicense income, under
clause (ii) of this Section, the amount actually paid by Spectrum to Chicago
Labs pursuant to clause (i) of this Section. If Spectrum receives as
Sublicensing Revenues anything of value in lieu of cash payments, Spectrum shall
pay Chicago Labs royalties at the applicable rate under Section 4.5.1, 4.5.2, or
4.5.3 as applicable, above based on the fair market value of such payment,
unless Chicago Labs waives in writing such payment obligation.

             4.5.8 *** Royalty Payments. Royalties owed to Chicago Labs pursuant
to this Section 4.5 shall be payable by Spectrum within *** after the *** (i.e.,
*** after ***) based upon the Net Sales of each Product during such ***. Any
underpayment or overpayment of the *** royalty payments shall be reconciled and
added or deducted to the royalty payment due in the *** in which such
underpayment or overpayment is discovered. All payments to Chicago Labs under
this Agreement shall be made in U. S. Dollars by bank wire transfer in
immediately available funds to such bank account in the

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<PAGE>

United States designated in writing by Chicago Labs from time to time. In the
case of sales outside the United States, the rate of exchange to be used in
computing the amount of currency equivalent in U. S. Dollars due Chicago Labs
shall be made at the rate of exchange utilized by Spectrum in its worldwide
accounting system under GAAP.

             4.5.9 Income Tax Withholding. If laws, rules or regulations require
withholding of income taxes or other rates imposed upon payments set forth in
this Section 4, Spectrum may make such withholding payments as required and
subtract such withholding payments from the payments set forth in this Section
4. Spectrum shall submit appropriate proof of payment of the withholding rates
to Chicago Labs within a reasonable period of time. Spectrum shall use efforts
consistent with its usual business practices to ensure that any withholding
taxes imposed are reduced as far as possible under the provisions of the current
or any future double taxation treaties or agreements between foreign countries,
and the Parties shall cooperate with each other with respect thereto, with the
appropriate Party under the circumstances providing the documentation required
under such treaty or agreement to claim benefits thereunder.

             4.5.10 Reports. Spectrum shall furnish to Chicago Labs at the same
time as each royalty payment is made by Spectrum, a written report of Net Sales
of the Products on a Product by Product and country by country basis and the
royalty due and payable thereon, for the *** period upon which the royalty
payment is based. Net Sales made in currencies other than U.S. Dollars will be
translated into U.S. Dollars as provided in Section 4.5.8 and added to Net Sales
made in U.S. Dollars for purposes of determining aggregate Net Sales and the
royalties due to Chicago Labs.

         4.6 RECORDS. Spectrum shall keep full, complete and proper records and
accounts of all sales of Products by Spectrum, its Affiliates, and to the extent
it acquires rights to do so, its sublicensees and distributors, in accordance
with GAAP, in sufficient detail and in the currencies in which the sale was made
to enable the royalties payable on each Product to be determined. All such
records, statements, reports and accounts referred to in this Section 4.6 shall
be retained for a period of *** after the end of the period to which they apply.

         4.7 AUDIT

             4.7.1 If Chicago Labs disagrees with a report provided by Spectrum,
pursuant to Section 4.5.10, Chicago Labs, at its own expense, shall have the
right, upon reasonable prior notice during regular business hours, to meet with
Spectrum's independent auditor to inspect and discuss the

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books and accounts of Spectrum or its Affiliates, related to the payment and
calculation of royalties arising under this Agreement. After this inspection, if
Chicago Labs still disagrees with the report provided by Spectrum, with
reasonable justification for such disagreement, Chicago Labs, at its own
expense, shall have the right, upon reasonable prior notice during regular
business hours, to appoint independent auditors reasonably acceptable to
Spectrum and have them during normal business hours, inspect and copy the books
and accounts of Spectrum or its Affiliates, related to the payment and
calculation of royalties arising under this Agreement. Spectrum shall cooperate
and cause Spectrum's Affiliates, to cooperate with such auditors. The auditors
performing the audit shall disclose to Chicago Labs only information relating to
the accuracy of records kept and the payments made, and shall be under a duty to
keep confidential any other information obtained from such records. Spectrum
shall audit the books and accounts of its sublicensees and/or distributors, if
any, using its independent auditor or a comparable reputable auditor. Spectrum
shall share the results of its audit with Chicago Labs.

             4.7.2 If any such audit establishes that Spectrum has underpaid or
overpaid the amount due, Spectrum shall promptly pay any remaining amounts due
as established by such audit or Chicago Labs shall promptly refund any over
payment. If the underpayment is by *** percent (***%) or more during any
calendar year, Spectrum shall reimburse Chicago Labs for its out-of-pocket
expense of such audit with interest at the rate specified in Section 4.8 below
for late payments on any such overdue payment from the date due until paid.

         4.8 LATE PAYMENTS. Any payments or reimbursements due Chicago Labs
under this Agreement that are not paid on the due date shall accrue interest at
the lower of the rate of *** percent (***%) per annum, or the maximum rate
allowed by law, from the due date until paid in full.

         4.9 NO REFUNDS. No payments or reimbursements once received by Chicago
Labs pursuant to Sections 4.1 through 4.4 above are refundable in whole or in
part.

5. OWNERSHIP AND PATENT MATTERS.

         5.1 OWNERSHIP. As between the parties, all Chicago Labs Technology
shall be owned by Chicago Labs. Improvements that are made by an employee, agent
or consultant of Spectrum, solely or jointly with a Third Party other than an
employee, agent or consultant of Chicago Labs, shall be owned by Spectrum.
Improvements that are made jointly by employees, agents or consultants of
Spectrum and employees, agents or consultants of Chicago Labs ("JOINT
INVENTIONS") shall be jointly owned by

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Spectrum and Chicago Labs and treated as joint inventions under U.S. laws
applicable to joint inventions. Chicago Labs shall, and hereby does, grant
Spectrum the exclusive and unrestricted right (even as to Chicago Labs) in the
Licensed Field to make, have made, use, sell, have sold, import, export and
license all Improvements that are owned by Chicago Labs and all Joint Inventions
for so long as Spectrum is prosecuting and maintaining the Patents contained in
such Joint Inventions. Chicago Labs shall, and hereby does, grant Spectrum a
perpetual, royalty-free license to use all Improvements owned by Chicago Labs
and all information, know-how and other data pertaining to all Improvements and
the Joint Inventions after Spectrum's royalty obligations under Section 4.5 have
expired or been terminated by Spectrum due to a breach of this Agreement by
Chicago Labs or due to the insolvency of Chicago Labs pursuant to Section 11.4.5
and all royalties then owed Chicago Labs have been paid, provided that Chicago
Labs has not previously terminated this Agreement prior to such expiration.
Spectrum shall own any trademarks associated with the Products.

         5.2 PROSECUTION AND MAINTENANCE OF CHICAGO LABS PATENT RIGHTS.

             5.2.1 Patent Prosecution and Maintenance. Spectrum, at its own
expense, shall direct and control the preparation, filing, prosecution and
maintenance of all United States and foreign Patents within the Chicago Labs
Patent Rights, including any interferences and foreign oppositions. Spectrum
shall, in its sole discretion, select outside patent counsel reasonably
acceptable to Chicago Labs to carry out such activities. ***

             5.2.2 Chicago Labs Participation and Assistance. Spectrum shall
consult with Chicago Labs with regard to the preparation, filing, prosecution
and/or maintenance of the Patents within the Chicago Labs Patent Rights and
Joint Patents and the scope of claims contained therein. Notwithstanding the
preceding sentence, however, Spectrum shall in all events have final
decision-making authority as relates to the preparation, filing, prosecution
and/or maintenance of the Patents within the Chicago Labs Patent Rights and the
scope of claims contained therein. Chicago Labs shall cooperate fully with
Spectrum, at Spectrum's request, in all matters relating to the preparation,
filing, prosecution and/or maintenance of the Patents within the Chicago Labs
Patent Rights, including without limitation, signing any necessary or
appropriate documents, providing written and testimonial evidence, and doing
such other acts as Spectrum may reasonably require.

             5.2.3 Patent Abandonment. In the event Spectrum elects not to
prosecute or to discontinue or abandon the prosecution and/or maintenance of any
patent or patent application within the Chicago Labs Patent Rights, any such
patent or patent application shall at that time be excluded from the

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definition of Chicago Labs Patent Rights and from the scope of the licenses
granted under this Agreement unless Spectrum later elects, with the consent of
Chicago Labs, to continue and maintain such patent or patent application, in
which case the patent or patent application shall remain within the Chicago Labs
Patent Rights and licenses hereunder. Spectrum shall give Chicago Labs at least
*** prior written notice of its election to discontinue or abandon any such
patent or patent application within the Chicago Labs Patent Rights during which
time Chicago Labs may elect, in its sole discretion, to prosecute, file,
continue and maintain such patent or patent application at its sole cost and
expense and for its sole benefit by delivery of written notice to Spectrum. If
Chicago Labs does not notify Spectrum in writing during such *** period that it
is exercising such rights, the patent or patent application shall be deemed
abandoned and neither Chicago Labs nor Spectrum shall have any further
responsibility for any such abandoned patent applications or patents.

         5.3 PROSECUTION AND MAINTENANCE OF PATENTS FOR JOINT INVENTIONS.
Spectrum shall file, prosecute and maintain Patents for any Joint Inventions.
The costs and expenses of such Joint Inventions shall be borne by ***. If
Spectrum no longer desires to retain responsibility for such Joint Invention or
for such Joint Invention in a particular country, Spectrum will provide at least
*** written notice to Chicago Labs, and Chicago Labs shall have the right, but
not the obligation, to assume such responsibility at its sole cost and expense.
If Chicago Labs agrees to assume such responsibility and expense, Spectrum shall
retain all of its right, title and interest in such Joint Invention, and any
Patents claiming the same. ***

         5.4 INFRINGEMENT ACTIONS.

             5.4.1 Prosecution of Infringement.

                (A) The Parties shall promptly notify one another in writing of
any and all actual or threatened infringements by Third Parties of any Patents
within the Chicago Labs Technology that relate to a Product in the Licensed
Field that is known to them, and in any event within *** of learning of such
infringement.

                (B) With respect to actual or threatened infringements of
Patents within the Chicago Labs Technology with respect to the Products, (i) if
such infringement is with respect to a Patent licensed to Chicago Labs by the
University under the University License Agreement, such infringement shall be
handled in accordance with Article 7 of the University License Agreement,
provided that Spectrum rather than Chicago Labs shall exercise the rights and
bear the responsibilities of the

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"Licensee" under that Article, and (ii) in all other cases, Spectrum shall have
the first right, but not the obligation, to file suit or take other action to
prevent such infringements of any such Patents. To the extent Spectrum takes
such action, Spectrum shall control any such action and may enter into
settlements, stipulated judgments or other arrangements respecting such
infringement, at its own expense; provided, however, that such proposed
settlements, judgments or arrangements shall be subject to Chicago Labs'
consent, not to be unreasonably withheld. In the event that Spectrum takes such
action, Spectrum shall indemnify, defend and hold Chicago Labs harmless from any
costs, expenses and liabilities respecting the action for such claimed
infringement. Chicago Labs shall permit an action to be brought by Spectrum in
Chicago Labs' name if required by law. Chicago Labs agrees to provide all
assistance that Spectrum may reasonably require in any litigation, including
providing written evidence, deposition and trial testimony, for which Spectrum
shall pay to Chicago Labs a reasonable hourly rate of compensation. Spectrum
shall keep Chicago Labs informed of developments in any such action, including,
to the extent permissible by law, the status of any settlement negotiations and
the terms of any offer related thereto. Chicago Labs shall have the right at its
own expense to be represented by counsel in any such action. Any damages or
other recovery from an infringement action undertaken by Spectrum pursuant to
this Section 5.4.1(b) shall be used ***.

                (C) Spectrum shall promptly notify Chicago Labs in writing of
its intention with regard to any such infringement. In the event that Spectrum
elects not to take action against an actual or threatened infringement, Chicago
Labs shall have the right to take action against such infringement, in which
case Chicago Labs shall (i) pay any and all costs and expenses incurred in such
action, (ii) indemnify, defend and hold Spectrum harmless from any costs,
expenses or liability respecting all such action, and (iii) retain any and all
recovery from such action. Spectrum agrees to provide all assistance that
Chicago Labs may reasonably require in any litigation, including providing
written evidence, deposition and trial testimony, for which Chicago Labs shall
pay to Spectrum a reasonable hourly rate of compensation.

             5.4.2 Defense of Infringement Claims.

                (A) If a Third Party makes or threatens against Spectrum, its
Affiliates or sublicensees any claim of infringement of a Patent right based
upon the use of, or arising as a result of the exercise of the rights and
licenses granted hereunder to the Chicago Labs Technology (each an "ALLEGED
INFRINGEMENT"), Spectrum shall have the right to respond to and defend any and
all such Alleged Infringements at its own cost and expense, and in its sole
discretion. Chicago Labs agrees to

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provide any necessary assistance that Spectrum may reasonably require in any
such defense action for which Spectrum shall pay to Chicago Labs a reasonable
hourly rate of compensation. Chicago Labs shall have the right, at its own
expense, to retain counsel of its choice to represent it in any such defense
action.

                (B) Spectrum shall promptly notify Chicago Labs in writing and
provide a copy of (i) any claim of Alleged Infringement filed with a court or
governmental authority or (ii) any written notice of an Alleged Infringement
from an attorney or law firm. Within a reasonable period of time in advance of
any responsive deadline required by law or otherwise set forth in the claim or
notice of Alleged Infringement, Spectrum shall notify Chicago Labs in writing as
to whether or not Spectrum intends to respond to such Alleged Infringement. In
the event that Spectrum does not intend to respond to any such claim or notice
or, notwithstanding Section 5.4.2(a), if Spectrum, in its sole discretion, asks
Chicago Labs to respond to any such claim or notice, Chicago Labs shall have the
right, in its sole discretion, to respond to and litigate or settle such Alleged
Infringement, in which case Chicago Labs shall pay any and all future costs and
expenses incurred by Spectrum in such action, and shall indemnify, defend and
hold Spectrum harmless from any future costs, expenses or liability respecting
all such actions undertaken by Chicago Labs.

         5.5 PATENT COSTS. The outside counsel, selected by Spectrum pursuant to
Section 5.2.1 above, to handle the preparation, filing, prosecution, issuance,
and maintenance of all United States and foreign Patents within the Chicago Labs
Patent Rights during the term of this Agreement shall invoice the University
directly for such services related to any Patents owned by the University
included within the Chicago Labs Patent Rights. ***

6. OBLIGATIONS RELATED TO DEVELOPMENT, MARKETING AND COMMERCIALIZATION.

         6.1 SPECTRUM'S DILIGENCE OBLIGATIONS. Spectrum shall use commercially
reasonable efforts to (i) complete, file and actively pursue an IND and NDA for
one or more Products in the Territory and (ii) promote and market the Product or
Products in the Territory under trademarks to be created by Spectrum in its sole
discretion. Spectrum will use the same sort of efforts in promoting each Product
as it uses for its other products with similar sales potential. Such development
and commercialization shall be pursued at Spectrum's sole cost and expense.
Spectrum shall have sole responsibility for making all decisions regarding the
development and commercialization of the Products. For purposes of this Section,
"commercially reasonable efforts" means efforts and resources commonly used in
the research-

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based pharmaceutical industry for a compound or product at a similar stage of
research, development or commercialization, and having similar market potential,
taking into account, among other factors, the competitiveness of the
marketplace, the proprietary position of the product and the profitability of
the product.

         6.2 GOVERNMENTAL APPROVALS. Spectrum shall be solely responsible for
obtaining all necessary approvals from Regulatory Authorities for the use,
development, production, distribution, sale and import or export of any
Products, at Spectrum's expense, including, without limitation, preclinical and
clinical trials and regulatory filings. Spectrum shall have sole responsibility
for any warning labels, packaging and instructions as to the use of Products and
for the quality control for any Product. Spectrum, its Affiliates or
sublicensees shall own all regulatory filings and documents filed with the
applicable Regulatory Authorities with respect to the Products and all
regulatory approvals.

         6.3 MANUFACTURE OF PRODUCTS. Spectrum shall be responsible for
conducting and funding all process science, process development, and scale-up
necessary to manufacture the Products for pre-clinical studies, clinical trials
and commercial sale.

         6.4 REPORTING. Spectrum shall keep Chicago Labs generally informed as
to Spectrum's progress in developing and commercializing the Products. Spectrum
shall keep Chicago Labs specifically and timely informed with regard to the
achievement of the milestone events listed in Section 4.4 above.

7. INDEMNITY.

         7.1 SPECTRUM INDEMNIFICATION. Spectrum (the "INDEMNIFYING PARTY" under
this Section 7.1) hereby agrees to indemnify, defend and hold Chicago Labs, its
Affiliates, and their directors, officers, employees and agents (the
"INDEMNIFIED PARTY(IES))" under this Section 7.1) harmless from and against any
and all suits, claims, actions, demands, liabilities, expenses and/or loss,
including without limitation reasonable legal expenses and attorneys' fees
(collectively, "LOSSES"), to which one or more Indemnified Parties may become
subject as a result of any (a) claim, demand, action or other proceeding for
personal injury, wrongful death or product defect by any Third Party relating to
the research, development, manufacture, use or sale of Products by Indemnifying
Party and/or its Affiliates and/or their respective employees or agents, except
to the extent that such Losses result from the gross negligence, wrongful
intentional acts or willful omissions of Indemnified Party(ies), (b) claim,
demand, action or other proceeding by any Third Party to the extent such Losses
result from Spectrum's breach of any, obligation, representation, warranty or
covenant contained in this Agreement or (c) any failure by Spectrum or its
Affiliates or its sublicensees to comply with applicable law. In no event shall
Spectrum be liable for any lost opportunities, profits or special, incidental,
consequential or indirect damages of the Indemnified Party(ies) under this
Section 7.1.

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<PAGE>

         7.2 CHICAGO LABS INDEMNIFICATION. Chicago Labs (the "INDEMNIFYING
PARTY" under this Section 7.2) hereby agrees to indemnify, defend and hold
Spectrum and its Affiliates and their directors, officers, employees, and agents
(the "INDEMNIFIED PARTY(IES))" under this Section 7.2) harmless from and against
any Losses to which one or more Indemnified Parties may become subject as a
result of any (a) claim, demand, action or other proceeding by any Third Party
to the extent such Losses result from Chicago Labs' breach of any obligation,
representation, warranty or covenant contained in this Agreement or (b) failure
by Chicago Labs to comply with applicable law. In no event shall Chicago Labs be
liable for any lost opportunities, profits or special, incidental, consequential
or indirect damages of the Indemnified Party(ies) under this Section 7.2.,
except, however, as the result of any breach by Chicago Labs of any of the
covenants in Section 9.3 below.

         7.3 INDEMNITY PROCEDURE. (A) The Indemnified Party(ies) agrees to give
the Indemnifying Party(ies) written notice, as soon as is practicable, but in
any event within thirty (30) days if possible, of any claim, suit, loss or the
discovery of facts upon which such Indemnified Party(ies) intends to base a
request for indemnification under Section 7.1 or Section 7.2 (collectively, a
"CLAIM").

                (B) The Indemnified Party(ies) shall furnish promptly to the
Indemnifying Party(ies) copies of all papers and official documents received in
respect of any Claim. The Indemnified Party(ies) shall cooperate with the
Indemnifying Party(ies), at the Indemnifying Party(ies)'s expense, in providing
witnesses and records necessary in the defense against any Claim.

                (C) With respect to any Claim relating solely to the payment of
money damages that will not (i) result in the Indemnified Party(ies)'s becoming
subject to injunctive or other relief, (ii) require an admission of guilt or
other responsibility or liability, or (iii) otherwise adversely affect the
business interests or rights of the Indemnified Party(ies) in any manner, and as
to which the Indemnifying Party(ies) shall have acknowledged in writing the
obligation to indemnify the Indemnified Party(ies) hereunder, the Indemnifying
Party(ies) shall have the sole right to defend, settle, or otherwise dispose of
such claim, on such terms as the Indemnifying Party(ies), in its sole discretion
(subject to the limitations of this Section), shall deem appropriate.

                (D) With respect to all other Claims the Indemnifying Party(ies)
shall obtain the written consent of the Indemnified Party(ies), which shall not
be unreasonably withheld, prior to ceasing to defend, settling, or otherwise
disposing thereof.

                (E) The Indemnifying Party(ies) shall not be liable for any
settlement or other disposition of a Claim by the Indemnified Party(ies) that is
reached without the written consent of the Indemnifying Party(ies).

                (F) Except as provided above, the costs and expenses, including
fees and

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<PAGE>

disbursements of counsel, incurred by any Indemnified Party(ies) in connection
with any claim shall be reimbursed on a *** basis by the Indemnifying
Party(ies), without prejudice to the Indemnifying Party(ies)'s right to contest
the Indemnified Party(ies)'s right to indemnification and subject to refund in
the event the Indemnifying Party(ies) is ultimately held not to be obligated to
indemnify the Indemnified Party(ies).

                (G) The Indemnified Party(ies) shall always have the right to
retain counsel and participate in the defense, negotiation or settlement of any
Claim at its/their own cost and expense.

8. REPRESENTATIONS AND WARRANTIES.

         8.1 BY CHICAGO LABS. Chicago Labs hereby represents and warrants that
as of the Effective Date: (A) it is a corporation duly organized, validly
existing and in good standing under the laws of the State of Illinois; (B) the
execution, delivery and performance of this Agreement have been duly authorized
by all necessary corporate action on the part of Chicago Labs; (C) it has the
right to grant the licenses and other rights granted herein; (D) it has not
previously granted any right, license or interest in or to the Chicago Labs
Technology, or any portion thereof, inconsistent with the rights granted to
Spectrum herein; and (E) to the best of its knowledge, there are no material
adverse proceedings, claims or actions pending or threatened relating to the
Chicago Labs Technology which would materially interfere with Chicago Labs'
performance of its obligations or power to make the grants and covenants
hereunder, or Spectrum's unfettered use of the Chicago Labs Technology.

                (A) Chicago Labs is the exclusive licensee from the University
of all right, title and interest in and to all of the Patent rights under the
Patents set forth in the University License Agreement. To Chicago Labs'
knowledge without any due diligence the Chicago Labs Technology is free and
clear of any and all encumbrances, covenants, conditions and restrictions or,
other adverse claims or interests of any kind or nature, and Chicago Labs has
not received any written notice or claim or, any oral notice or claim,
challenging Chicago Labs' complete and exclusive license rights to the Chicago
Labs Technology subject to the University's reservation of rights referred to in
Section 3.3 of this Agreement or suggesting that any other person has any claim
of legal or beneficial ownership with respect thereto, and there is no
agreement, decree, arbitral award or other provision or contingency which
obligates Chicago Labs to grant licenses in the Chicago Labs Technology.

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                (B) To Chicago Labs' present knowledge in the absence of any due
diligence, Chicago Labs owns or possesses adequate licenses or other rights to
use all of the Chicago Labs Technology necessary to develop, make, have made,
use, sell, offer for sale, have sold, import and export and commercialize any
Products in the Licensed Field in the Territory.

                (C) To Chicago Labs' present knowledge, no litigation is now
pending and no notice or other claim has been received by Chicago Labs, (A)
alleging that Chicago Labs has engaged in any activity or conduct that infringes
upon, violates or constitutes the unauthorized use of the Patents of any Third
Party, or (B) challenging the ownership, use, validity or enforceability of any
of the patent or patent applications within the Chicago Labs Patents Rights.

                (D) With respect to the University License Agreement, (i) such
University License Agreement is the complete and current agreement between
Chicago Labs and the Board of Trustees of the University of Illinois with
respect to the Chicago Labs Technology as of the Effective Date, (ii) such
University License Agreement is in full force and effect, (iii) no party to the
University License Agreement has been given or received a notice of default
under the University License Agreement and Chicago Labs knows of no grounds for
either party to be deemed in default under the University License Agreement, and
(iv) Chicago Labs is current on all its obligations thereunder.

         8.2 BY SPECTRUM. Spectrum hereby represents and warrants that as of the
Effective Date: (A) it is a corporation duly organized, validly existing and in
good standing under the laws of the State of Delaware; (B) it has the full
right, authority and power to enter into this Agreement and to perform its
obligations hereunder; (C) the execution, delivery and performance of this
Agreement have been duly authorized by all necessary corporate action on the
part of Spectrum; (D) to the best of its knowledge there are no material adverse
proceedings, claims or actions pending or threatened against it as of the
Effective Date of this Agreement which would materially interfere with the
performance of its obligations hereunder, and (E) it has obtained all requisite
consents, approvals and authorizations of all governmental authorities and other
persons or entities to enter into this Agreement and perform its obligations
hereunder.

         8.3 DISCLAIMER. Nothing in this Agreement is or shall be construed as:

             8.3.1 A warranty or representation by Chicago Labs as to the
validity or scope of any claim or patent within the Chicago Labs Patent Rights;

             8.3.2 A warranty or representation that anything made, used, sold,
or otherwise disposed of under any license granted in this Agreement is or will
be free from infringement of any patent rights or other intellectual property
right of any Third Party;

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<PAGE>

             8.3.3 An obligation to bring or prosecute actions or suits against
Third Parties for infringement of any of the patent rights except as otherwise
provided in this Agreement;

             8.3.4 Granting by implication, estoppel, or otherwise any licenses
or rights under patents or other rights of Chicago Labs or Third Parties, other
than the Chicago Labs Technology; or

             8.3.5 A guarantee that a NDA for a Product for any indication will
be successful, in whole or in part.

         EXCEPT AS PROVIDED IN SECTION 8.1, CHICAGO LABS MAKES NO
REPRESENTATIONS OR WARRANTIES CONCERNING THE CHICAGO LABS TECHNOLOGY, INCLUDING
WITHOUT LIMITATION, ANY EXPRESS OR IMPLIED WARRANTY CONCERNING THE
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF THE CHICAGO LABS
TECHNOLOGY.

9. ADDITIONAL COVENANTS.

         9.1 PRESERVATION OF TITLE AND RIGHTS. Chicago Labs shall retain
ownership and title to all Chicago Labs Technology owned by Chicago Labs and
licensed hereunder and shall use diligent efforts at least equivalent to those
Chicago Labs uses for its other technology of like kind to preserve and maintain
such ownership and title, subject to Spectrum fully performing all of its
obligations under this Agreement. Chicago Labs shall use diligent efforts at
least equivalent to those Chicago Labs uses for its other technology of like
kind to maintain in full force and effect all Third Party licenses to which
Chicago Labs is a party and under which Chicago Labs licenses rights to
Spectrum, subject to Spectrum fully performing all of its obligations under this
Agreement.

         9.2 NO CONFLICTS. Neither Party shall grant any right, license or
interest in or to the Chicago Labs Technology, or any portion thereof,
inconsistent with the rights granted to Spectrum herein. Without the other
Party's prior written consent, neither Party shall enter into any agreement that
creates additional obligations upon the other Party or, except to the extent
otherwise permitted in this Agreement, limits the exercise of the other Party's
rights hereunder or diminishes the other Party's rights hereunder.

         9.3 UNIVERSITY LICENSE AGREEMENT. Chicago Labs shall be responsible for
and pay all costs that may become due under the University License Agreement or
any other Third Party license agreement as a result of the transactions and
activities contemplated by this Agreement, including but not limited to license
fees, milestone payments and royalty payments required thereunder. Chicago Labs
shall not, without the prior written consent of Spectrum, (i) terminate the
University License Agreement or (ii) amend the University License Agreement or
exercise or waive any rights under the University License Agreement in a manner
that would diminish the rights granted to Spectrum hereunder, impose any
additional obligations on Spectrum or otherwise be detrimental to Spectrum.
Chicago Labs shall not take

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<PAGE>

any actions or make any omissions that would be likely to or do in fact
constitute or cause a material breach of the University License Agreement, such
that the licensor thereunder would be entitled to terminate such agreement or
amend or modify it in any way that would adversely affect a license or other
rights granted to Spectrum under this Agreement. Notwithstanding the foregoing,
Chicago Labs shall not be liable under this Section for its breach of a term of
the University License Agreement, if the primary cause of Chicago Labs breach of
the term of the University License Agreement is due to a breach by Spectrum of
the same obligation under this Agreement. Chicago Labs acknowledges that
Spectrum shall have the right, in accordance with the terms set forth in the
Amendment to the University License Agreement, a certified true copy of which
Chicago Labs shall deliver to Spectrum promptly after its execution, to be
assigned and assume the University License Agreement in the event Chicago Labs
is in default under the University License Agreement and agrees that it shall
not have any cause of action against Spectrum solely for taking assignment to
and assuming such University License Agreement.

         9.4 EXECUTION OF DOCUMENTS. In order to achieve the intent of Section
5.2, 5.3 and 11. 5(b), each Party shall promptly execute or have executed by its
employees, agents and consultants all documents necessary to vest ownership of
inventions and related intellectual property rights relating to Joint Patents in
Chicago Labs and Spectrum as provided in Section 5.3, to enable Spectrum to
file, prosecute and maintain the Patents within the Chicago Labs Patent Rights
and Joint Patents as provided in Sections 5.2 and 5.3, the Parties' back-up
right pursuant to Section 5.2, and to transfer to Chicago Labs the benefit of
Spectrum's research and development work under Section 11.5(b). If Spectrum is
unable, after reasonable effort, to secure the signature of any Chicago Labs'
employee, agent or independent contractor on any document needed to apply for,
prosecute or defend any patent or other intellectual property right or
protection relating to the Chicago Labs Patent Rights or the Joint Patents,
Chicago Labs hereby designates and appoints Spectrum and its duly authorized
officers and agents as its agent and attorney in fact to execute, verify and
file applications, and to do all other lawfully permitted acts necessary to
protect Spectrum's rights in Joint Patents and to enable Spectrum to file,
prosecute and maintain Chicago Labs Patent Rights and Joint Patents with the
same legal force and effect as if executed by Chicago Labs. If Chicago Labs is
unable, after reasonable effort, to secure the signature of any Spectrum
employee, agent or independent contractor on any document needed to apply for,
prosecute or defend any patent or other intellectual property right or
protection relating to Joint Patents or to transfer to Chicago Labs the benefit
of Spectrum's research and development work, Spectrum hereby designates and
appoints Chicago Labs and its duly authorized officers and agents as its agent
and attorney as its attorney in fact to execute, verify and file applications,
and to do all other lawfully permitted acts necessary to protect Chicago Lab's
rights in Joint Patents and such research and development work with the same
legal force and effect as if executed by Spectrum.

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10. CONFIDENTIALITY AND PUBLICATION.

             10.1 TREATMENT OF CONFIDENTIAL INFORMATION. The Parties agree that
during the term of this Agreement, and for a period of seven (7) years after
this Agreement terminates or expires, a Party receiving Confidential Information
of the other Party will (i) maintain in confidence such Confidential Information
to the same extent such Party maintains the confidentiality of its own
Confidential Information, (ii) not disclose such Confidential Information to any
Third Party without the prior written consent of the disclosing Party and (iii)
not use such Confidential Information for any purpose other than the exercise of
a Party's rights or performance of a Party's obligations under this Agreement;
provided however, that the provisions of this Section 10.1 shall not prevent a
Party from disclosing Confidential Information if such disclosure:

                (A) is made to its employees, directors, accountants, attorneys,
contractors or consultants who reasonably require such disclosure on a need to
know basis and who are bound to it by obligations of confidentiality and non-use
no less stringent than the obligations between Spectrum and Chicago Labs
hereunder;

                (B) is made to collaborators for the purpose of performing the
obligations or exercising the rights of a Party hereunder and who are bound to
that Party by obligations of confidentiality and non-use no less stringent than
the obligations between Spectrum and Chicago Labs hereunder;

                (C) is in response to a valid order of an United States court or
otherwise required by law or regulation, provided however that receiving Party
shall first have given notice to the disclosing Party and shall have made a
reasonable effort to obtain a protective order by: (i) seeking protection of
Confidential Information not relevant to the court's inquiry from a general
disclosure (e.g., without limitation, requesting limited and in-camera review by
such court and/or seeking that such information be treated under seal); (ii)
seeking to redact any Confidential Information; and (iii) in any event requiring
that, to the extent ordered to be disclosed, that such disclosure of
Confidential Information be used only for the purposes for which the order was
issued; or

                (D) is necessary to: (i) file or prosecute Patents in accordance
with this Agreement; (ii) submit regulatory filings with respect to Products in
accordance with this Agreement; (iii) prosecute or defend litigation; (iv) make
required governmental securities filings and other such similar and required
disclosures by law, subject to appropriate redactions and requests for
confidential treatment as permitted by law; (v) make disclosures required by the
principal stock exchange on which the Party's stock is traded, subject to
appropriate redactions and requests for confidential treatment as permitted by
law and the rules of such exchange; (vi) conduct pre-clinical or clinical trials
of Products in accordance with this Agreement, provided any Affiliates or Third
Parties conducting pre-clinical trials agree to be bound by terms of

                                       25

<PAGE>

confidentiality and non-use at least equivalent in scope to those set forth in
this Section 10.1 and any Affiliates or Third Parties conducting clinical trials
agree to be bound by terms of confidentiality and non-use that are customarily
obtained in connection with such clinical trials; or (viii) enable Affiliates or
bona fide potential or actual sublicensees to evaluate and/or exercise their
rights under a sublicense that would be or has been issued in accordance with
this Agreement, provided such Affiliates and Third Parties agree to be bound by
similar terms of confidentiality and non-use at least equivalent in scope to
those set forth in this Section 10.1.

         10.2 PUBLIC STATEMENTS.

             10.2.1 Publications. Chicago Labs or Spectrum, as the case may be,
may publish or present information derived from the performance of this
Agreement, provided that: the publishing Party first provides the non-publishing
Party with a copy of the proposed publication or presentation for comment and
input at least forty-five (45) days prior to any submission for publication or
presentation and if any such information was derived from the non-publishing
Party's efforts under this Agreement, the non-publishing Party shall have the
right to require the publishing Party to redact such information from the
proposed publication. In addition, at the non-publishing Party's request, the
publishing party will further delay the presentation or publication for an
additional forty-five (45) days so as to allow the non-publishing party time to
file for patent protection or other intellectual property protection. If a
publication by Spectrum results from work relating to the Chicago Labs
Technology, Spectrum agrees to acknowledge Chicago Labs and give credit to
Chicago Labs' scientists, as scientifically appropriate, based on any
contribution they may have made to the work. Likewise, if a publication by
Chicago Labs results from work performed by Spectrum, Chicago Labs agrees to
acknowledge Spectrum and give credit to Spectrum' scientists, as scientifically
appropriate, based on any contribution they may have made to the work.

             10.2.2 Other Public Statements. Except as provided in Section
10.2.1, or as otherwise required by law or the rules of the principal stock
exchange on which the Party's stock is traded, no Party shall originate any
public statement, news release or other written public announcement, whether in
the public press, stockholders' reports, or otherwise, relating to this
Agreement or to any sublicense hereunder, or to the performance hereunder or any
such agreements, or use a Party's name for any purpose, including, without
limitation, in connection with the advertising or sale of Products, without the
prior written approval of the other Party, such consent not to be unreasonably
withheld. The Parties each agree to respond to each such request within five (5)
business days of receipt of a request (unless a shorter period of time is
necessary to comply with law). Notwithstanding anything to the contrary in this
Agreement, each party shall be permitted to publicly disclose (i) the existence
of this Agreement, (ii) that Chicago Labs and Spectrum are the parties to this
Agreement, and (iii) the Chicago Labs Technology covered by this Agreement. In
the case of unintentional public disclosure concerning this Agreement, any
Product or any other subject matter hereof, the disclosing Party shall promptly
inform the other Party of such disclosure and the other Party shall be entitled
to make a public announcement

                                       26

<PAGE>

regarding the subject matter of the disclosure. The other Party shall notify the
disclosing Party of their intention to make such an announcement. Following a
Party's consent to or approval of the public announcement of any information
pursuant to this Section 10.2.2, both Parties shall be entitled to make
subsequent public announcements of such information without renewed compliance
with this Section 10.2.2, unless the scope and/or duration of such consent or
approval is expressly limited. Upon conclusion of this Agreement, the Parties
will publish a press release on their future cooperation.

11. TERM, DEFAULT AND TERMINATION.

         11.1 TERM OF AGREEMENT. The term of this Agreement shall commence on
the Effective Date. Unless terminated early in accordance with the provisions of
this Agreement, the term of this Agreement shall endure on a Product-by-Product
and country-by-country basis until the expiration of the obligation to pay
royalties under Section 4.5 above applicable to such Product in such country.
This Agreement shall expire in its entirety after the date that Spectrum no
longer owes any royalties to Chicago Labs under Section 4.5. Spectrum
acknowledges that the University License Agreement and hence Spectrum's rights
under the Chicago Labs Patent Rights (to the extent they relate to the patents
licensed by the University to Chicago Labs) terminate upon the last to expire of
the patents licensed to Chicago Labs under the University License Agreement,
unless sooner terminated under Section 12.1 of the University License Agreement.

         11.2 UNILATERAL TERMINATION - SPECTRUM. Spectrum shall have the
unilateral right to terminate this Agreement, in its entirety or on a
Product-by-Product or country-by-country basis, at any time for any reason upon
prior written notice to Chicago Labs given at least *** prior to the desired
date of termination.

         11.3 UNILATERAL TERMINATION - CHICAGO LABS. Spectrum shall file the
first IND, or its equivalent, with the FDA, or a similar agency in another
jurisdiction, for a Product no later than *** and will file an NDA for such
Product within *** after filing the related IND. Chicago Labs shall agree to
reasonable extensions of the foregoing deadlines on request by Spectrum provided
that Spectrum demonstrates good faith efforts to meet the deadline for which an
extension is requested. The parties acknowledge that the intention of this
Section 11.3 is to allow Chicago Labs meet its obligations under the University
License Agreement, and therefore if the University agrees at Chicago Lab's
request to extend the dates for filing an IND and an NDA pursuant to the terms
of the University License Agreement to give Spectrum additional time based on
its previous commercially reasonable, good faith efforts to meet the

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<PAGE>

dates for which an extension is requested or such filing dates are automatically
extended pursuant to the terms of the University License Agreement, then the
dates in this Section shall be extended an equal time period or in the case of
an automatic extension pursuant to the terms of the University License
Agreement, the dates in this Section shall be extended to such dates minus ***.

         11.4 DEFAULT.

             11.4.1 The following event shall constitute an "EVENT OF DEFAULT"
hereunder: a material breach of a material provision of this Agreement by a
Party. For purposes of this Agreement, it is not a "material breach" of this
Agreement by Spectrum if the development of a Product is delayed due to the
following: (i) scientific, medical or technical reasons; (ii) circumstances that
are beyond the control of Spectrum; or (iii) the fault of Chicago Labs. In
addition to the foregoing, termination of the University License Agreement due
to the fault of Chicago Labs or the assignment to and assumption by Spectrum of
the University License Agreement due to a default by Chicago Labs shall
constitute an "Event of Default" under this Agreement with respect to Chicago
Labs.

             11.4.2 Upon the occurrence of any Event of Default by a Party, the
non-defaulting Party may deliver to the defaulting Party written notice of
intent to terminate specifying in reasonable detail the nature of such breach,
such termination to be effective *** after the date set forth in such notice if
the defaulting Party fails to cure such material breach within such *** period.

             11.4.3 If Spectrum fails to pay any license fee, royalty,
installment, patent expenses or other payment required by this Agreement on
time, and such payment remains unpaid for more than ***, Chicago Labs shall have
the right to terminate this Agreement on *** written notice specifying the
failure, unless Spectrum shall pay Chicago Labs within the *** period, all
amounts and interest then due and payable. Upon expiration of the *** period, if
Spectrum has not made all such payments, the rights, privileges and license
granted hereunder shall terminate, unless Spectrum's failure to pay arises from
a bona fide dispute concerning royalties due, in which case either of the
parties may elect to pursue the alternative remedy in Article 12.

             11.4.4 The termination rights under Sections 11.4.2 and 11.4.3
above shall be in addition to and not in substitution for any other remedies
that may be available to the non-defaulting Party. Termination pursuant to such
sections shall not be treated as an election of remedies and shall not relieve
the defaulting Party from liability and damages to the other Party for breach of
this

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Agreement. Waiver by either Party of a single breach or a succession of breaches
shall not deprive such Party of any right to terminate this Agreement arising by
reason of any subsequent breach.

             11.4.5 In addition to the termination rights provided for in this
Article 11, each Party shall have the right to terminate this Agreement,
immediately by giving written notice of termination to the other Party, if the
other Party files a voluntary petition, or if an involuntary petition is granted
in respect of the other Party and appeal proceedings are not commenced within a
period of *** from the date of such petition under the bankruptcy provisions of
applicable law, or the other Party is declared insolvent, undergoes voluntary or
involuntary dissolution, or makes an assignment for the benefit of its
creditors, or fails or is unable to pay its debts as they come due, or suffers
the appointment of a receiver or trustee over all, or substantially all, of its
assets or properties.

         11.5 EFFECTS OF EXPIRATION OR TERMINATION.

                (A) Rights Upon Expiration. Following the expiration of the term
of this Agreement under Section 11.1, excluding any early termination prior to
expiration, Spectrum shall have and retain a perpetual and fully paid up license
under the applicable Product Licenses. Notwithstanding the foregoing, Spectrum
shall retain all rights and interest in all materials, inventions, discoveries
and know-how (whether or not patentable or patented) solely generated by
Spectrum in the course of performing research and development activities under
the licenses granted in this Agreement. Other than rights intended to survive
expiration, or as otherwise provided under Section 11.5(e), neither Party shall
have any further rights or obligations upon the expiration of this Agreement.

                (B) Rights Upon termination by Chicago Labs under Sections 11.3
or 11.4 or by Spectrum under Section 11.2. Upon any termination of this
Agreement by Chicago Labs under Section 11.3 or 11.4 or by Spectrum under
Section 11.2 occurring prior to the regularly scheduled expiration date of this
Agreement, (i) all rights and licenses granted by Chicago Labs to Spectrum shall
terminate and revert to Chicago Labs and (ii) Spectrum shall return to Chicago
Labs or destroy at Chicago Labs' option the Chicago Labs Materials. The
foregoing provisions shall also apply to the partial termination of this
Agreement by Spectrum on a Product-by-Product basis in accordance with Section
11.2, provided, however, that in such event: (1) only those rights that solely
pertain to the Product and/or country being terminated would revert back to
Chicago Labs; (2) only those Chicago Labs Materials that solely pertain to the
Product and/or country being terminated would be returned or destroyed by
Spectrum. In addition Spectrum shall at no cost to Chicago Labs transfer to
Chicago Labs the benefit of all research and development work it has performed
or had performed on Products. At the

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same time, Spectrum shall provide to Chicago Labs at no cost to Chicago Labs all
CMC data, preclinical testing and stability data and results and clinical trial
data and results relating to the development of Products and a technology
transfer package for all processes, formulations, and protocols for the
manufacture of APIs for Products and for finished Products, If Spectrum has
licensed any technology from Third Parties relating to the Chicago Labs
Technology or any Product, Spectrum shall use commercially reasonable efforts to
obtain the rights to transfer and to transfer such rights to Chicago Labs at no
cost to Chicago Labs. Notwithstanding the foregoing, Spectrum shall retain its
right, title and interest under Section 5.1 in any Improvements made solely by
Spectrum and in any Joint Inventions, but shall grant to Chicago Labs a
nonexclusive, sublicensable, royalty free license to such Improvements to the
extent that the development, making, having made, use, offer for sale,
distribution, importation, or exportation of Products in the License Field by
Chicago Labs, its Affiliates or licensees would, but for the license, violate
Spectrum's patent rights.

                (C) Rights Upon termination by Spectrum under Section 11.4. Upon
any termination of this Agreement by Spectrum under Section 11.4 occurring prior
to the regularly scheduled expiration date of this Agreement, the license rights
granted by Chicago Labs to Spectrum contained in this Agreement shall continue
in full force and effect, however, Spectrum's obligations under this Agreement
shall terminate. Notwithstanding the foregoing, Chicago Labs shall retain its
right, title and interest under Section 5.1 in any Joint Inventions

                (D) Payments. Not later than *** after the expiration or
termination date of this Agreement, each Party shall pay to the other Party any
amounts that are then due and payable, including but not limited to any final
period royalty report and payment. Notwithstanding anything in this Agreement to
the contrary, Spectrum shall not be required to pay any remaining monthly
installments yet to be paid pursuant to Sections 4.2 or 4.3 above, if this
Agreement is terminated prior to the payments of all installments pursuant to
Sections 4.2 or 4.3.

                (E) Accrued Rights; Surviving Obligations. Termination or
expiration of this Agreement for any reason shall be without prejudice to any
rights which shall have accrued to the benefit of either Party prior to such
termination or expiration, and shall not relieve either Party from its
obligations which are expressly indicated to survive expiration or termination
of this Agreement, including, without limitation, those under Articles 7, 10, 12
and 13 and Sections 4.6 through 4.9, 5.1 through 5.4, 11.5 and 11.6 shall
survive any expiration or termination of this Agreement.

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         11.6 WORK-IN-PROGRESS. Notwithstanding anything in this Agreement to
the contrary, upon any such early termination of the license granted hereunder
in accordance with this Agreement, Spectrum shall be entitled to finish any
work-in-progress and to sell any completed inventory of a Product which remain
on hand as of the date of the termination, so long as Spectrum pays to Chicago
Labs the royalties applicable to said subsequent sales in accordance with the
terms and conditions as set forth in this Agreement, provided that no such sales
shall be permitted after the expiration of *** after the date of termination.

12. DISPUTE RESOLUTION.

         12.1 ARBITRATION. Any claim, dispute, or controversy of any nature
arising out of or relating to this Agreement, including, without limitation, any
action or claim based on tort, contract or statute, or concerning the
interpretation, effect, termination, validity, performance and/or breach of this
Agreement (each, a "Dispute") between the Parties shall be finally settled by
binding arbitration conducted in the English language in accordance with the
Rules of Commercial Arbitration of the American Arbitration Association ("AAA").
The arbitration shall be held in Cook County, Illinois, and shall be conducted
by three (3) arbitrators who are knowledgeable in the subject matter at issue in
the dispute. One (1) arbitrator will be selected by Chicago Labs, one (1)
arbitrator will be selected by Spectrum, and the third arbitrator will be
selected by mutual agreement of the two (2) arbitrators selected by the Parties,
provided that if a Party fails to select an arbitrator within thirty (30) days
of the request for arbitration, the arbitrator that was to be selected by such
Party shall be appointed in accordance with the rules of the AAA. During the
period prior to the hearing, each Party shall have the right to conduct up to
two (2) depositions and to submit up to twenty (20) document requests to the
other Party. The arbitrators may proceed to an award, notwithstanding the
failure of either Party to participate in the proceedings. The arbitrators
shall, within forty-five (45) calendar days after the conclusion of the
arbitration hearing, issue a written award and statement of decision describing
the essential findings and conclusions on which the award is based, including
the calculation of any damages awarded. The arbitrators shall be authorized to
award compensatory damages, but shall NOT be authorized to (i) award
non-economic or punitive damages (except to the extent expressly permitted by
this Agreement), or (ii) reform, modify or materially change this Agreement or
any other agreements contemplated hereunder; provided, however, that the damage
limitations described in part (i) of this sentence will not apply if such
damages are statutorily imposed. The arbitrators also shall be authorized to
grant any temporary, preliminary or permanent equitable remedy or relief that
the arbitrators deem just and equitable and within the scope of this Agreement,
including, without limitation, an injunction or order for specific performance.
The award of the arbitrators shall be the sole and exclusive remedy of the
Parties. Judgment on the award rendered by the arbitrators

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may be enforced in any court having competent jurisdiction thereof, subject only
to revocation on grounds of fraud or clear bias on the part of the arbitrators.
Notwithstanding anything contained in this Section 12.1 to the contrary, each
Party shall have the right to institute judicial proceedings against the other
Party or anyone acting by, through or under such other Party, in order to
enforce the instituting Party's rights hereunder through specific performance,
injunction or similar equitable relief.

         12.2 ADMINISTRATION. Each Party shall bear its own attorneys' fees,
costs, and disbursements arising out of the arbitration, and shall pay an equal
share of the fees and costs of the arbitrators; provided, however, that the
arbitrators shall be authorized to determine whether a Party is the prevailing
party, and if so, to award to that prevailing party reimbursement for its
reasonable attorneys' fees, costs and disbursements (including, for example,
expert witness fees and expenses, photocopy charges and travel expenses), and/or
the fees and costs of the arbitrators. Absent the filing of an application to
correct or vacate the arbitration award (if permitted by AAA rules), each Party
shall fully perform and satisfy the arbitration award within fifteen (15) days
of the service of the award.

         12.3 WAIVERS. By agreeing to the binding arbitration provision in
Section 12.1, the Parties understand that they are waiving certain rights and
protections which may otherwise be available if a Dispute between the Parties
were determined by litigation in court, including, without limitation, the right
to seek or obtain certain types of damages precluded by this provision, the
right to a jury trial, certain rights of appeal, and a right to invoke formal
rules of procedure and evidence.

         12.4 NON-ARBITRABLE DISPUTES. Section 12.1 shall not apply to any
dispute, controversy or claim that concerns (A) the validity, enforceability or
infringement of a Patent, trademark or copyright; or (B) any antitrust,
anti-monopoly or competition law or regulation, whether or not statutory. All
such disputes, controversies or claims, and all judicial actions brought in
order to enforce the instituting Party's rights hereunder through specific
performance, injunction or similar equitable relief, shall be brought only in
the state or federal courts sitting in Cook County, Illinois. The Parties hereby
submit to the exclusive jurisdiction of such courts.

13. GENERAL PROVISIONS.

         13.1 FURTHER ASSURANCES. At any time or from time to time on and after
the Effective Date, each Party, at the request of the other Party, shall (i)
deliver to the other Party such records, data or other documents consistent with
the provisions of this Agreement, (ii) execute, and deliver or cause to be
delivered, all such assignments, consents, documents or further instruments of
transfer or license, and (iii) take or cause to be taken all such other actions,
as the other Party may reasonably deem necessary or desirable in order for such
other Party to obtain the full benefits of this Agreement and the transactions
contemplated hereby.

                                       32
<PAGE>

         13.2 INDEPENDENT CONTRACTORS. The relationship between Chicago Labs and
Spectrum is that of independent contractors. Chicago Labs and Spectrum are not
joint venturers, partners, principal and agent, master and servant, employer or
employee, and have no other relationship other than independent contracting
Parties. Chicago Labs and Spectrum shall have no power to bind or obligate each
other in any manner, other than as is expressly set forth in this Agreement.

         13.3 ENTIRE AGREEMENT; MODIFICATION. This Agreement sets forth the
entire agreement and understanding between the Parties as to the subject matter
hereof. There shall be no amendments or modifications to this Agreement, except
by a written document which is signed by both Parties.

         13.4 FORCE MAJEURE. Neither Party shall be liable for any delay or
failure of performance (other than payment obligations) to the extent such delay
or failure is caused by circumstances beyond its reasonable control and that by
the exercise of due diligence it is unable to prevent, provided that the Party
claiming excuse uses its commercially reasonable efforts to overcome the same.

         13.5 LIMITATION OF LIABILITY. EXCEPT FOR LIABILITY FOR BREACH OF
CONFIDENTIALITY OR FOR INFRINGEMENT OR MISAPPROPRIATION, NEITHER PARTY SHALL BE
LIABLE TO THE OTHER FOR INDIRECT, INCIDENTAL, CONSEQUENTIAL, SPECIAL OR
EXEMPLARY DAMAGES, INCLUDING BUT NOT LIMITED TO LOST PROFITS (EXCEPT, HOWEVER,
ANY LOST PROFITS OF SPECTRUM AS THE RESULT OF ANY BREACH BY CHICAGO LABS OF ANY
OF THE COVENANTS IN SECTION 9.3), ARISING FROM OR RELATING TO ANY BREACH OF THIS
AGREEMENT, REGARDLESS OF ANY NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.

         13.6 ASSIGNMENT. Except for sublicensing rights as set forth in Section
3.2, neither this Agreement nor any rights granted hereunder may be assigned or
transferred by either Party without the prior written consent of the
non-assigning Party except, to a successor in interest pursuant to a merger,
acquisition or sale of all or substantially all of the assignor's assets to
which this Agreement relates. Subject to the limitations on assignment herein,
this Agreement shall be binding upon and inure to the benefit of any successors
in interest and permitted assigns of Chicago Labs and Spectrum. Any such
successor or permitted assignee of Spectrum' interest shall expressly assume in
writing the performance of all terms and conditions of this Agreement to be
performed by Spectrum.

         13.7 GOVERNING LAW. This Agreement shall be construed and enforced in
accordance with the laws of the State of Illinois, without regard to the
conflicts of laws principles thereof.

         13.8 HEADINGS. The headings for each article and section in this
Agreement have been inserted for convenience of reference only and are not
intended to limit or expand on the meaning of the language contained in the
particular article or section.

         13.9 SEVERABILITY. Should any one or more of the provisions of this
Agreement be held invalid

                                       33

<PAGE>

or unenforceable by a court of competent jurisdiction, it shall be considered
severed from this Agreement and shall not serve to invalidate the remaining
provisions thereof. The Parties shall make a good faith effort to replace any
invalid or unenforceable provision with a valid and enforceable one such that
the objectives contemplated by them when entering this Agreement may be
realized.

         13.10 NO WAIVER. Any delay in enforcing a Party's rights under this
Agreement or any waiver as to a particular default or other matter shall not
constitute a waiver of such Party's rights to the future enforcement of its
rights under this Agreement, excepting only as to an express written and signed
waiver as to a particular matter for a particular period of time.

         13.11 NOTICES. Any notices required by this Agreement shall be in
writing, shall specifically refer to this Agreement and shall be sent by
registered or certified airmail, postage prepaid, or by e-mail or telefax,
confirmed by registered mail, or by telex or cable, charges prepaid, or by
overnight courier, charges prepaid, and shall be delivered to the respective
addresses set forth below unless subsequently changed by written notice to the
other Party:

         For Chicago Labs:             Chicago Labs, Inc.
                                       2201 West Campbell Park Drive, Suite 116
                                       Chicago, Illinois 60612
                                       Facsimile:  (312) 602 2781
                                       E-Mail:  gulati@chicagolabs.com
                                       Attention:  Dr. Anil Gulati

         For Spectrum:                 Spectrum Pharmaceuticals, Inc.
                                       157 Technology Drive
                                       Irvine, CA 92618
                                       Facsimile: (949) 788-6706
                                       E-Mail:
                                       Attention:  Rajesh C. Shrotriya, M.D.

Notice shall be deemed delivered upon the earlier of (i) when actually received,
(ii) the date notice is sent via e-mail, telefax, telex or cable, and confirmed
by written receipt or (iii) the day immediately following delivery to overnight
courier (except Sunday and holidays).

         13.12 COMPLIANCE WITH LAWS. Nothing contained in this Agreement shall
require or permit Chicago Labs or Spectrum to do any act inconsistent with the
requirements of any United States law, regulation or executive order as the same
may be in effect from time to time.

                                       34
<PAGE>

         IN WITNESS WHEREOF, the Parties have executed this Agreement by their
duly authorized representatives as of the date set forth above.

CHICAGO LABS, INC.                           SPECTRUM PHARMACEUTICALS, INC.

By:                                          By:
   -----------------------------                -----------------------------

Name: Dr. Anil Gulati                        Name: Rajesh C. Shrotriya, M.D.

Title: President                             Title: Chairman, CEO and President

                                       35
<PAGE>

                                    EXHIBIT A

                              CHICAGO LABS KNOW-HOW

***

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                                  Exhibit A - 1

<PAGE>

                                    EXHIBIT B

                             CHICAGO LABS MATERIALS

None.

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