Document:

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                                                                   EXHIBIT 10.24

                                 AMENDMENT TO
               EVOKE COMMUNICATIONS, B.V. SHAREHOLDERS AGREEMENT

     THIS AMENDMENT (this "Amendment") is effective as of October 1, 2000 (the
"Effective Date"), by and between Evoke Communications, Inc., a Delaware
corporation with its principal office located at 1157 Century Drive, Louisville,
CO 80027 ("Evoke"), and @viso Limited, a company incorporated under the laws of
England and Wales ("@viso").

1.   Recitals.
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     A.   Evoke and @viso desire to amend the Shareholders Agreement dated as of
June 9, 2000 (the "Agreement") between the parties hereto to associate
themselves as shareholders (the Shareholders") of Evoke Communications B.V., a
Netherlands corporation (the "Company") to launch and produce Internet
communication services in the specified territory.

     B.   The Company and its Shareholders acknowledge that @Viso is granted
under this agreement both protective rights as well as participatory rights in
managing the Company.

     NOW, THEREFORE, for good and valuable consideration, the receipt and
sufficiency of which is hereby acknowledged, and intending to be legally bound,
the parties agree as follows:

2. Amendment to "4. Management, (d) and (e)"
--------------------------------------------

Article 4, Sections (d) and (e) shall be deleted and replaced in their entirety
as follows:

4.   Management
     ----------

          (d) Strategic corporate actions that are outside the ordinary course
of business and certain other actions specified below, except for actions taken
in connection with the rights granted pursuant to the License Agreement and the
attachments thereto, may be taken by the Board only upon authorization by a
majority vote of the directors that includes at least one director designated by
@viso.  These include:
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          (i)    any acquisition or capital expenditure that involves an amount
     exceeding 10% of the assets of the Company;

          (ii)   any sale, lease or other disposition of assets that involves an
     amount exceeding 5% of the assets of the Company;

          (iii)  the incurrence, guarantee or otherwise becoming liable with
     respect to any indebtedness for borrowed money in an amount exceeding 10%
     of the assets of the Company;

          (iv)   the execution of any strategic contract, or the incurrence of
     any obligation, with a commitment of an amount exceeding 10% of the assets
     of the Company;

          (v)    the issuance or sale of any Common Shares (including the IPO of
     the Company) to new Shareholders other than the 1,000,000 Common Shares
     referred to in Section 1(b), as well as of any other securities and the
     terms thereof, other than as required by Section 8(c);

          (vi)   any call for additional capital pursuant to Section 5 below;

          (vii)  any declaration or payment of any dividend or other
     distribution, direct or indirect, on account of any Shares or any
     redemption, retirement, purchase or other acquisition, direct or indirect,
     by the Company of any Shares;

          (viii) any services contract or business arrangement with a
     Shareholder;

          (ix)   the adoption of any stock option or award plan for employees,
     directors or consultants; and

          (x)    engaging in any business other than as contemplated by Section
     2 above and activities incidental thereto, either directly or through any
     corporation or other entity in which the Company has, directly or
     indirectly, an equity interest.
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          (e)   The following corporate actions may be taken by the Shareholders
only upon authorization by a majority vote that includes Shares held by both
Evoke and @viso, for so long as Evoke and @viso owns, directly or indirectly, at
least 10% of the equity securities of the Company, respectively:

          (i)   any increase or decrease in the total number of authorized
     directors comprising the Board;

          (ii)  any amendment, alteration or repeal of any provision of the
     Articles of Association; and

          (iii) any merger or consolidation, whether or not the Company is the
     surviving corporation; any sale, lease, exchange or other disposition of
     all or substantially all of the assets of the Company; or the liquidation
     of the Company (whether voluntary or otherwise) or the revocation of any
     such step; and

          (iv)  the approval of the annual business plan and budget.

3.  General.
-----------

     A.   Except as expressly provided herein, all other terms and conditions of
the Agreement shall continue in full force and effect.

IN WITNESS WHEREOF, the parties have caused this Agreement to be duly executed
by their duly authorized representatives as of the Effective Date.
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                                        EVOKE COMMUNICATIONS, INC.

                                        By: /s/ Paul Berberian
                                            ------------------
                                              Paul Berberian
                                              President and CEO

                                        @VISO LIMITED.

                                        By: /s/ Ronald D. Fisher
                                            ---------------------
                                              Ronald D. Fisher
                                              Director

                                        AGREE AND ACKNOWLEDGE
                                        ---------------------

                                        EVOKE COMMUNICATIONS, B.V.

                                        By: /s/ Andreas Brun
                                            ----------------
                                                Andreas Brun
                                                CEO<PAGE>

                                                                   EXHIBIT 10.25

                            TERMINATION AND RELEASE

     This TERMINATION AND RELEASE (this "Agreement") is made as of the date set
forth below (the "Effective Date") by and between Work.com LLC, a Delaware
limited liability company ("Work.com") and the person or entity named below
("Company").

     WHEREAS, Work.com has informed Company that Work.com intends to cease
operations; and Work.com and Company desire to enter into this Agreement to
terminate any and all rights and obligations existing between them on the terms
set forth herein;

     NOW, THEREFORE, for good and valuable consideration, the receipt and
sufficiency of which is hereby acknowledged, the parties agree as follows:

1.   All Prior Agreements Terminated.  The following agreements between the
     -------------------------------
parties, including the termination of any and all survival provisions contained
in the agreements, are hereby terminated:

Agreement Name                                                  Date
                                                          -----------------
Vstream Services Agreement (to the extent assigned by
 At Home Corporation to Work.com)                         November 17, 1999
Letter Amendment to Services Agreement                    December 14, 2000
Collaboration Services Subscription                       December 14, 2000

2.   Payments.  As consideration for the termination of the agreements listed
     --------
above and the release provided for below, (a) the Promotion Fees due by Company
in the Letter Amendment to Services Agreement dated December 14, 2000 (attached
hereto as Exhibit A) is reduced by $150,000 and (b) Work.com will pay Company
the amount of $55,000 as final payment of all services rendered by Company to
Work.com. These payments serve as satisfaction of all amounts owing by either
party to the other.

3.   Customer Acquisition.  Company may solicit any Work.com customers that used
     --------------------
Company services pursuant to the Agreements set forth above without any
obligations to Work.com.

4.   Release.
     -------

4.1  Upon satisfaction of the payment obligations set forth in Section 2 above,
each of Work.com and Company  (together the "Parties Hereto"), each for
themselves and their respective legal successors and assigns, releases and
absolutely and forever discharges each other, and their respective shareholders,
officers, directors, employees, agents, attorneys, parents, divisions,
subsidiaries, affiliates, legal successors and assigns (including in accordance
with Section 1541 of the Civil Code of the State of California) of and from all
claims, liabilities, damages, debts, accounts, reckonings, obligations, costs,
expenses, liens, demands and causes of action of every kind and nature
whatsoever, whether now known or unknown, suspected or unsuspected, which they
may now have, own or hold at any time heretofore ever had, owned or held or
could, shall or may hereafter have, own or hold against one another based upon
or arising out of the Agreement, any of the terminated agreements listed above
or any other agreement by and between the Parties Hereto entered into prior to
the date hereof (all of which are hereinafter referred to as and included with
the "Released Matters").

4.2  It is the intention of the parties in executing this Agreement and in
exchanging the consideration called for by this Agreement that this Agreement
shall be effective as a termination of all of the agreements set forth in
Paragraph 1 ("All Prior Agreements Terminated"), and as a full and final accord
and satisfaction and general release of and from all Released Matters.

4.3  Further, each of the Parties Hereto acknowledges that it is familiar with
the protections afforded by (i) Section 1542 of the Civil Code of the State of
California, which provides that "[a] general release
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does not extend to claims which the creditor does not know or suspect to exist
in his favor at the time of executing the release, which if known by him must
have materially affected his settlement with the debtor" and (ii) any similar
provision of the laws of any other applicable jurisdiction.

4.4  Each of the Parties Hereto hereby waives and relinquishes any right or
benefit which it has or may have under Section 1542 of the Civil Code of the
State of California or any similar provision of the statutory or nonstatutory
law of any other jurisdiction to the full extent that it may lawfully waive all
such rights and benefits pertaining to the subject matter of this Agreement.  In
connection with such waiver and relinquishment, each of the Parties Hereto
acknowledges that it is aware that its attorneys or accountants may hereafter
discover claims or facts in addition to or different from those which the
Parties Hereto now knows or believes to exist with respect to the subject matter
of this Agreement, but that it is the intention of the Parties Hereto to fully,
finally and forever settle and release all of the Released Matters which now
exist, may exist or heretofore have existed between them, except as otherwise
expressly provided.  In furtherance of this intention, the release herein given
shall be and remain in effect as a full and complete release notwithstanding the
discovery or existence of any such additional or different claim or fact.

4.5  The Parties Hereto each warrant and represent to the other that it is the
sole and lawful owner of all right, title and interest in and to all of the
respective Released Matters and that it has not heretofore voluntarily, by
operation of law or otherwise, assigned or transferred or purported to assign or
transfer to any person or entity any Released Matter or any part or portion
thereof.

4.6   The Parties Hereto acknowledge that they have each consulted with an
attorney prior to signing this Agreement and that it is giving up any legal
claims that they have against the other by signing it. The Parties Hereto
acknowledge that they are signing this Agreement knowingly, willingly and
voluntarily in exchange for the obligations of the other described in this
Agreement.

5.   General. This Agreement constitutes the entire agreement and understanding
     -------
between the Parties Hereto with respect to the subject matter hereof and
supersedes all express or implied, written or oral, agreements, representations
and conditions, prior to or contemporaneous with the effective date of this
Agreement, between the Parties Hereto with respect thereto, including but not
limited to any prior proposals, waivers, accords or concessions.  This Agreement
may only be modified or amended by a written instrument signed by the parties.
This Agreement will be governed and construed in accordance with the laws of the
State of California (without giving effect to the conflicts of laws provisions
thereof).

     IN WITNESS WHEREOF, authorized representatives of the parties have executed
this Agreement as of the date set forth below.

<TABLE>
<S>                                                       <C>
--------------------------------------------------------------------------------------------------------
Company Name:  Evoke Communications                       Work.com LLC,
Address:       1157 Century Drive                         By: Work.com Inc., its managing member
               Louisville, CO   80027

By:                                                       By:
    -----------------------------                             -------------------------------
Name:                                                     Name:  Eric van Miltenburg
      ---------------------------
Title:                                                    Title:  SVP, Business Development & Operations
--------------------------------------------------------------------------------------------------------
</TABLE>

Effective Date:  March 16, 2001
<PAGE>

                                                                       EXHIBIT A

December 14, 2000

Mr. Don Hutchison
Chairman and CEO
Work.com LLC
550 Broadway
Redwood City, CA 94063

Dear Don:

At Home Corporation ("Excite@Home")  has transferred to Work.com LLC
("Work.com") certain rights and obligations under the November 17, 1999 Vstream
Services Agreement, by and between Excite@Home and Evoke Communications, Inc.
("Evoke" formerly known as Vstream, Inc.) (the "Agreement").  Pursuant to a
letter agreement dated April 26, 2000, Evoke has consented to such transfer.
Such transferred rights and obligations are those with respect to the (i)
business portal site previously maintained by Excite@Home at www.work.com; and
(ii) the Excite Business Channel as set forth in the Agreement ("Assigned
Provisions").

Work.com and Evoke now wish to amend the Assigned Provisions ("Amendment") as of
December 14, 2000 ("Effective Date") as follows:

1.   Term  - The Term of the Assigned Provisions is hereby extended to two years
     from the Effective Date of this Amendment.

2.   Promotional Campaigns - Work.com will perform promotional campaigns for
     Evoke Webconferencing and Collaboration Services currently available at
     http://webconference.work.com ("Co-Branded Core Services"). The parties
     will mutually agree upon the promotional content for the following
     promotions:

          a)   During the Fourth Quarter of calendar year 2000, Work.com will
               promote as set forth on Exhibit A hereto the Co-Branded Core
               Services to the registered users ("Registered Users") of Work.com
               (the "Registered Users Promotion"). Work.com will be responsible
               for all out-of-pocket expenses incurred by Work.com in connection
               with this promotion.

          b)   By the end of the First Quarter of calendar year 2001, Work.com
               will promote as set forth on Exhibit B hereto Work.com and the
               Co-Branded Core Services to subscribers to the Wall Street
               Journal the (the "WSJ Promotion"). The purpose of the campaign
               shall be limited to promotion of Work.com's services and the Co-
               Branded Core Services. Except as provided in Section 4(c) hereof,
               Work.com will be responsible for all out-of-pocket expenses
               incurred by Work.com in connection with this promotion.

          c)   Beginning in the First Quarter of 2001,Work.com shall add to the
               process by which users become Registered Users of Work.com, as
               part of the online dialog during registration and as a prominent
               part of the welcome e-mail that registered users receive, a
               registration process for the Co-Branded Core Services (the "Co-
               Branded Core Services Registration") outlined by Evoke and
               subject to the
<PAGE>

               reasonable approval of Work.com. The parties shall reasonably
               cooperate to design and implement such registration process.
               Work.com shall maintain the Co-Branded Core Services Registration
               for six (6) months after it is effected.

          d)   Each of the promotions described in paragraphs a) - c) will
               include an offer to users of an amount of free usage of the Co-
               Branded Core Services (the "Free Promo"). The Free Promo shall
               consist of the equivalent of $100 of free service and may be
               offered by Work.com to users only in connection with the
               Registered Users Promotion, the WSJ Promotion or as otherwise
               mutually agreed by the parties. Evoke may request, in its sole
               discretion, a modification to the Free Promo as described in this
               paragraph 2(d); and any such modification shall take effect upon
               the mutual agreement of the parties. Further details of this Free
               Promo will be mutually agreed upon by the parties.

3. Service Obligations:

          a)   Without in any way limiting Evoke's obligations pursuant to the
               Agreement, Evoke will provide all services reasonably necessary
               to allow users to register and use the Co-Branded Core Services.

          b)   Evoke hereby releases Work.com from any obligations with respect
               to and Work.com may utilize in its sole discretion any and all
               on-line advertising inventory previously committed to Evoke.

4. Exhibit E - Financial Terms is revised as follows:

          a)   Revenue Sharing:  During the term of this Amendment, Evoke will
               ----------------
               pay Work.com 50% of Net Revenue generated from users of the Co-
               Branded Core Services. Net Revenue means gross receipts less 20%
               for estimated long distance services and taxes.

          b)   Promotion Fees:  During the Term of this Amendment, Evoke will
               ---------------
               pay Work.com $1,000,000 in the following installments: (i)
               $500,000 before the end of the Fourth Quarter of calendar year
               2000 for performing the Registered Users Promotion; and (ii)
               $500,000 before the end of the First Quarter of calendar year
               2001 for performing the WSJ Promotion.

          c)   Promotional Costs: Evoke will reimburse Work.com's out-of-pocket
               -----------------
               expenses not to exceed $400,000, in connection with the WSJ
               Promotion as specified in Section 2(b).

          d)   Delay of Promotion:  In the event that Evoke comes under court or
               ------------------
               der to halt all advertising such that the promotion(s)
               contemplated herein cannot be performed as specified, the parties
               agree to cooperate to develop a promotion that is legally
               permitted under any such court order.

          e)   Delivery and Usage Fees:  Work.com will enter into a separate
               -----------------------
               Service Subscription Agreement with Evoke with respect to the
               Free Promo.
<PAGE>

          5. All of the Assigned Provisions remain in full force and effect,
             except as specifically modified in this Amendment, and any End User
             pricing provisions contained in the Agreement that are hereby
             superceded. All terms capitalized, unless defined herein, shall
             have the meanings set forth in the Agreement.

          Please acknowledge below that you agree to the terms and conditions of
          this Amendment.

          Sincerely,

          /s/ Paul Berberian

          Paul Berberian
          President and CEO - Evoke Communications, Inc.

          Agreed to:   Work.com LLC by Work.com Inc., its managing member

          Name:   Don Hutchison     Signature: /s/ Don Hutchison
                                               -----------------
          Title:  Chairman and CEO

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