Document:

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                                                                     Exhibit 4.1

COMMON STOCK                                             COMMON STOCK
PAR VALUE $.001                                          PAR VALUE $.001

Number                                                   Shares
MM

                               [LOGO APPEARS HERE]

                                MODEM MEDIA, INC.

INCORPORATED UNDER THE LAWS                              CUSIP 607533 10 6
OF THE STATE OF DELAWARE                                 SEE REVERSE FOR CERTAIN
                                                         DEFINITIONS

THIS CERTIFIES THAT

IS THE RECORD HOLDER OF

            FULLY PAID AND NON-ASSESSABLE SHARES OF COMMON STOCK OF

Modem Media, Inc. transferable on the books of the Corporation by the holder
hereof in person or by duly authorized attorney upon surrender of this
certificate properly endorsed. This certificate and the shares represented
hereby are issued and shall be subject to all of the provisions of the Restated
Certificate of Incorporation of the Corporation and its By-Laws, as amended
(copies of which are on file at the office of the Corporation), to all of which
the holder by acceptance hereof assents. This certificate is not valid until
countersigned by a Transfer Agent and registered by a Registrar.

Witness the facsimile seal of the Corporation and the facsimile signatures of
its duly authorized officers.

Dated:                                          /s/ Marc C. Particelli
                                                Chief Executive Officer

Countersigned and Registered                    /s/ Sloane Levy
EQUISERVE TRUST COMPANY, NA                     Secretary

Transfer Agent and Registrar

                    [Modem Media Date of Incorporation Seal]

<PAGE>

                          (Reverse Side of Certificate)

THE CORPORATION WILL FURNISH WITHOUT CHARGE TO EACH STOCKHOLDER WHO SO REQUESTS,
THE POWERS, DESIGNATIONS, PREFERENCES AND RELATIVE, PARTICIPATING, OPTIONAL OR
OTHER SPECIAL RIGHTS OF EACH CLASS OF STOCK OR SERIES THEREOF AND THE
QUALIFICATIONS, LIMITATIONS OR RESTRICTIONS OF SUCH PREFERENCES AND/OR RIGHTS.

The following abbreviations, when used in the inscription on the face of this
certificate, shall be construed as though they were written out in full
according to applicable laws or regulations:

<TABLE>
<S>                                                     <C>
------------------------------------------------------- ---------------------------------------------------------------
TEN COM-- as tenants in common                          UNIF GIFT MIN ACT--                  Custodian
TEN ENT-- as tenants by the entireties                                           (Cust)                    (Minor)
JT TEN-- as joint tenants with right of
survivorship and not as tenants                         under Uniform Gifts to Minors
in common                                               Act_____________________________________________________________
                                                                                 (State)
------------------------------------------------------- ---------------------------------------------------------------
</TABLE>

     Additional abbreviations may also be used though not in the above list.

For value received, ___________________ hereby sell, assign and transfer unto

PLEASE INSERT SOCIAL SECURITY OR OTHER
IDENTIFYING NUMBER OF ASSIGNEE

_____________________________________________________________________________
(PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING POSTAL ZIP CODE,
OF ASSIGNEE)

______________________________________________________________________ Shares
of the capital stock represented by the within Certificate, and do hereby
irrevocably constitute and appoint

____________________________________________________________________ Attorney
to transfer the said stock on the books of the within named Corporation with
full power of substitution in the premises.

Dated _______________________________________________________________________

                    X________________________________________________________

                    X________________________________________________________

                    NOTICE: THE SIGNATURE (S) TO THIS ASSIGNMENT MUST CORRESPOND
                    WITH THE NAME(S) AS WRITTEN UPON THE FACE OF THE
                    CERTIFICATE IN EVERY PARTICULAR, WITHOUT ALTERATION OR
                    ENLARGEMENT OR ANYCHANGE WHATEVER.

Signature(s) Guaranteed

By
THE SIGNATURE(S) MUST BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION
(BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH
MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM), PURSUANT TO
S.E.C. RULE 17Ad-15.

This certificate also evidences certain Rights as set forth in a Rights
Agreement between Modem Media, Inc. (the "Company") and EquiServe Trust Company,
N.A., dated as of June 18, 2001 and as amended from time to time (the "Rights
Agreement"), the terms of which are hereby incorporated herein by reference and
a copy of which is on file at the principal executive offices of the Company.
The Company will mail to the holder of this certificate a copy of the Rights
Agreement without charge promptly after receipt of a written request therefor.
Under certain circumstances, as set forth in the Rights Agreement, such Rights
may be evidenced by separate certificates and no longer be evidenced by this
certificate, may be redeemed or exchanged or may expire. As set forth in the
Rights Agreement, Rights issued or transferred to, or held by, any Person who
is, was or becomes an Acquiring Person or an Affiliate or Associate thereof (as
such terms are defined in the Rights Agreement), whether currently held by or on
behalf of such Person or by any subsequent holder, may be null and void.<PAGE>

                                                                 Exhibit 10.2(m)

March 8, 2000

Ms. Sylvia (Sally) Price
54 W. Patent Road
Bedford Hills, NY  10507

Dear Sally:

We are pleased to offer you the position of VP, Group Account Director, with
Modem Media, reporting to Dave Lynch, VP, Managing Director, starting on or
before April 3, 2000.

The following confirms the specific agreement regarding your compensation if you
accept the position of VP, Group Account Director with Modem Media:

o    Your annual base salary on your start date will be $200,000.00.

o    Pending Board approval, you will be granted 10,000 stock options
     post-split. The options will vest over a period of three years, with the
     first 33% vesting one year from the grant date, and the remaining vesting
     scheduled at 33% annually for a period of two years thereafter. You will
     participate in future grants of options to be determined by Company
     management and the Board of Directors. The exercise price of the granted
     options will be the current fair market value on your date of grant or your
     date of hire, which ever occurs later.

o    You will be eligible for 20 vacation days. In addition you are eligible for
     2 personal days and 2 floating holidays each year.

o    As discussed, we will provide you with an incentive based bonus scheme. At
     minimum you will be eligible for a merit bonus to the same extent all other
     employees are eligible, with a target of up to 25% of your annual base
     salary. Such bonus is dependent upon your performance, the overall
     financial performance of the Company, and is at the discretion of the
     Company's senior management.

Sally, we are looking forward to your joining Modem Media and playing a key role
in our continued success. Please acknowledge your acceptance by signing the copy
of your offer letter and confidentiality agreement and returning the documents
to me in the enclosed envelope. If you have any questions or concerns, please
give me a call.

Best Regards

/s/ Rose Zory
Rose Zory
Director, Human Resources

                                                Accepted By: /s/ Sally Price
                                                             Sally Price

                                                Date:        March 10, 2000<PAGE>

                                                                Exhibit 10.14(a)

                                 AMENDMENT NO. 1

     AMENDMENT NO. 1 (this "Amendment"), dated as of February ___, 2002
effective as of December 31, 2001, among CentrPort, Inc., a Delaware corporation
(together with its predecessor in interest CentrPort, LLC, the "Company"), Modem
Media, Inc., a Delaware corporation ("Modem Media), and the investors listed on
Exhibit A (the "Schedule of Investors") attached hereto (each an "Investor" and
collectively, the "Investors").

     WHEREAS, pursuant to the Stock Purchase Agreement dated December 22, 2000
between the Company, Modem Media and the Investors (the "Agreement"), each
Investor purchased from the Company and Modem Media the number of shares of
Series A Preferred Stock, par value $0.01 per share, of the Company (the "Series
A Preferred Stock") specified opposite such Investor's name on the Schedule of
Investors;

     WHEREAS, the parties to the Agreement desire to amend the Agreement.

NOW, THEREFORE, in consideration of the mutual covenants and agreements set
forth in this Amendment, and for other good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, the parties hereto
agree as follows:

     1.   The first sentence of Section 1.4 of the Agreement shall be deleted in
          its entirety and the following shall be substituted therefore:

          "The Investors shall pay, by wire transfer, the remaining 25% of the
     aggregate Purchase Price payable to the Company on the first anniversary of
     the Closing and the remaining 50% of the aggregate Purchase Price payable
     to Modem Media on the second anniversary of the Closing, unless there has
     been a Change of Control of Modem Media on or prior to the first
     anniversary of the Closing, in which case the Investors will remain
     obligated to make such payments only if (1) the VAR Agreement continues to
     be in full force and effect (unless it has been validly terminated by Modem
     Media or the acquiring entity pursuant to the terms of the VAR Agreement),
     (2) the Company maintains its preferred status under the VAR Agreement and
     (3) the acquiring entity has no competing technology performing functions
     similar to those provided by the Company"

     2.   All other terms and conditions contained in the Agreement shall remain
          in full force and effect.

                            [SIGNATURE PAGES FOLLOW]

<PAGE>

            THOMAS WEISEL CAPITAL PARTNERS PARTNER FUND LLC
            By: Thomas Weisel Capital Partners LLC, its manager

            By: /s/ Mark Lieberman
                --------------------------------------
                Name: Mark Lieberman
                Title: Partner

            THOMAS WEISEL CAPITAL PARTNERS EMPLOYEE FUND LP
            By: Thomas Weisel Capital Partners LLC, its manager

            By: /s/ Mark Lieberman
                --------------------------------------
                Name: Mark Lieberman
                Title Partner

            THOMAS WEISEL CAPITAL PARTNERS (DUTCH), L.P.
            By: Thomas Weisel Capital Partners (Dutch) LLC, its general partner
            By: Thomas Weisel Capital Partners LLC, its managing member

            By: /s/ Mark Lieberman
                --------------------------------------
                Name: Mark Lieberman
                Title: Partner

            TWP CENTRPORT INVESTORS
            By: /s/ Shaugn Stanley
                --------------------------------------
                Name: Shaugn Stanley
                Title: Chief Financial Officer

            TWP 2000 CO-INVESTMENT FUND, L.P.
            By: Thomas Weisel Capital Partners LLC, its general partner

            By: /s/ Mark Lieberman
                --------------------------------------
                Name: Mark Lieberman
                Title: Partner

            VENTURE STRATEGY PARTNERS II, LP

            By: /s/ Joanna Rees Gallanter
                --------------------------------------
                Name: Joanna Rees Gallanter
                Title: Managing Partner

            VENTURE STRATEGY AFFILIATE FUND L.P.

            By: /s/ Joanna Rees Gallanter
                --------------------------------------
                Name: Joanna Rees Gallanter
                Title: Managing Partner

            MODEM MEDIA, INC.

            By: /s/ Marc Particelli
                --------------------------------------
                Name: Marc Particelli
                Title: President and CEO

<PAGE>

            TRIDENT CAPITAL FUND-V, L.P.
            By: Trident Capital Management-V, L.L.C.,
            Its General Partner

            By: /s/ Venetia Kontogouris
                --------------------------------------
                Name: Venetia Kontogouris
                Title: Managing Director

            WHEATLEY ASSOCIATES III, L.P.
            By: Wheatley Partners III, LLC, General Partner

            By: /s/ Jonathan Lieber
                --------------------------------------
                Name: Jonathan Lieber
                Title: Vice President

            WHEATLEY PARTNERS III, L.P.
            By: Wheatley Partners III, LLC, General Partner

            By: /s/ Jonathan Lieber
                --------------------------------------
                Name: Jonathan Lieber
                Title: Vice President

            WHEATLEY FOREIGN PARTNERS III, L.P.
            By: Wheatley Partners III, LLC, General Partner

            By: /s/ Jonathan Lieber
                --------------------------------------
                Name: Jonathan Lieber
                Title: Vice President

            DRAPER RICHARDS LP
            By: Draper Richards Management Company

            By: /s/ William H. Draper, III
                --------------------------------------
                Name: William H. Draper, III
                Its: President

            STAENBERG PRIVATE CAPITAL

            By: /s/ Jon Staenberg
                --------------------------------------
                Name: Jon Staenberg
                Title: Managing Member

            CENTRPORT, INC.

            By: /s/ William Zierolf
                --------------------------------------
                Name: William Zierolf
                Title:  President

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