<PAGE>

                                                                 Exhibit 10.3(e)


                      EMPLOYMENT, CONFIDENTIAL INFORMATION,
                 NONDISCLOSURE, NONSOLICITATION, NONCOMPETITION
                       AND INVENTION ASSIGNMENT AGREEMENT

As a condition of my employment with Modem Media, Inc., its subsidiaries,
affiliates, successors or assigns (collectively, the "Company"), and in
consideration of my employment with the Company and my receipt of the
compensation and benefits (including, without limitation, stock option grants)
now and hereafter provided to me by the Company, I agree to the following:

1.       Confidential Information.
         ------------------------

         (a) Company Information. I agree at all times during the term of my
             -------------------
employment and thereafter, to hold in strictest confidence, and not to use,
except for the benefit of the Company, or to disclose to any person, firm or
corporation without written authorization of the Board of Directors of the
Company, any Confidential Information of the Company. I understand that
"Confidential Information" includes, without limitation, Company past, present,
and future proprietary information, business plans, customer lists, business
prospects, inventions, formulas, technology, designs, drawings, computer
programs, software, databases and source codes, research techniques, research
results, media plans, layouts, storyboards, scripts, reports and information
regarding the Company's or its actual or prospective clients' advertising,
marketing and sales promotion products, services and strategies, and any other
information deemed confidential in the Non-Public and Confidential Information
provision of the Company's Code of Conduct, which I have received, whether
imparted to me by the Company or its clients or prospective clients or obtained
by me as part of this relationship, and whether or not marked confidential or
proprietary, and including but not limited to information incorporated in
computer software or held in electronic storage media. I further understand
that, following the termination of my employment with the Company, Confidential
Information shall not include any of the foregoing items which has lawfully
become generally known to and available to the public through no wrongful act or
omission of mine. I agree to use my best efforts to prevent the unauthorized use
or disclosure of Confidential Information and to ensure that Confidential
Information is stored at such locations and under such conditions as to
reasonably prevent the unauthorized disclosure or use or duplication of such
information and materials.

         (b) Third Party Information. I recognize that the Company has received
             -----------------------
and in the future will receive from third parties their confidential or
proprietary information subject to a duty on the Company's part to maintain the
confidentiality of such information and to use it only for certain limited
purposes. I agree to hold all such confidential or proprietary information in
the strictest confidence and not to disclose it to any person, firm or
corporation or to use it except as necessary in carrying out my work for the
Company consistent with the Company's agreement with such third party.

2.       Non-Solicitation; Non-Competition.
         ---------------------------------

         a. Non-Solicitation of Customers. For a period of twelve (12) months
            -----------------------------
immediately following the termination of my employment with the Company, I shall
not either directly or indirectly, either on my own behalf or on behalf of any
other person, firm or corporation, solicit any account with respect to
Competitive Services (as defined below) that is a client of the business unit or
units of the Company by which I am employed (the "Business Unit") at the time of
my termination of employment or that was a client of the Business Unit at any
time within one (1) year prior to the termination of my employment.

         b. Non-Solicitation of Employees. For a period of twelve (12) months
            -----------------------------
immediately following the termination of my employment with the Company, I shall
not either directly or indirectly, either on my own behalf or on behalf of any
other person, firm or corporation, solicit, induce, recruit or encourage any
person who is employed by the Company or who was at any time within one (1) year
prior to the termination of my employment, to leave their employment with the
Company, or attempt to solicit, induce, recruit, encourage or take away
employees of the Company.

         c. Covenant Against Competition.
            ----------------------------

            i. For a period of (x) the length of time I receive Contract
Severance as defined and determined under that certain Employment Agreement
dated the date hereof (the
<PAGE>

"Employment Agreement") or (y) six months immediately following the termination
of my employment with the Company (A) if such termination was by the Company for
Cause (as defined in the Employment Agreement), or was a due to a resignation by
me other than for Good Reason (as defined in the Employment Agreement), or (B)
if I do not receive Contract Severance because I failed to sign the release
required under such Employment Agreement (the "Restricted Period"), I shall not
directly or indirectly, individually or with others, start up, establish, own
more than five percent (5%) of the outstanding stock of, control or otherwise
perform services as an officer, director, partner, principal, a person acting as
head of a division, practice or department, or a person performing a
policy-making function, for any business, practice, service or enterprise
located in New Haven County, CT; Fairfield County, CT; Westchester County, NY;
or New York City, NY (collectively, the "Restricted Area") (or performing any of
the services described below to third parties located in the Restricted Area),
which provides any of the following professional services to third parties
(collectively, "Competitive Services"): (i) digital or internet enabled,
research, creative development, strategy development, consulting, marketing
and/or advertising services; (ii) designing, developing and building (including
creating customized software and applications) websites; (iii) creating and
distributing services across IP-enabled channels; or (iv) collecting and
analyzing customer data to monitor and measure the effectiveness of the services
described in subsections (i), (ii) and (iii) above.

            ii. In addition to the obligations set forth in Section 2(c)(i)
above, during the Restricted Period, I shall not engage in Competitive Services
on behalf of any business, practice, service or enterprise located in the
Restricted Area (or performing any Competitive Services to third parties located
in the Restricted Area), by directly or indirectly providing such services to
(a) any third party that has been a client of the Company at any time within the
twelve (12) month period immediately preceding the termination of my employment
with the Company ("Client"), or (b) any third party which is engaged in a
business that is substantially similar to and directly competitive with that of
Client.

            iii. I understand that I may be released, in whole or in part, from
the covenants described in this Section 2(c) only with the prior written consent
of the Company's Board of Directors, which consent may be withheld for any
reason, in the Company's sole discretion.

         d. Reasonableness of Restrictions. I have carefully read and considered
            ------------------------------
the provisions of this Section 2 and, having done so, agree that the
restrictions set forth in this Section 2 (including, but not limited to, the
duration and geographic scope of the restrictions set forth in this Section 2)
are fair and reasonable and are reasonably required for the protection of the
interests of the Company, and do not preclude me from earning a livelihood, nor
do they unreasonably impose limitations on my ability to earn a living. I
further agree that the potential harm to the Company of the non-enforcement of
these restrictions outweighs any potential harm to me of their enforcement by
injunction or otherwise.

         e. Reformation.  If any of the provisions of this Section 2 are
            -----------
determined to be invalid or unenforceable to any extent, by reason of being
vague or unreasonable as to area, duration or scope of activity, that portion of
this Section 2 shall be considered divisible and shall be immediately reformed
to only such area, duration and scope of activity as shall be determined to be
reasonable and enforceable by the court having jurisdiction over the matter; and
I agree that any such reformation shall be valid and binding as though any
invalid or unenforceable provision had not been included herein.

3.       Inventions.
         ----------

         (a) Assignment of Inventions. I shall disclose to the Company, and
hereby sell, transfer and assign to the Company, or its designee, all right,
title, and interest in and to any and all inventions, original works of
authorship, developments, concepts, improvements or trade secrets, whether or
not patentable or registrable under copyright or similar laws, and other
intellectual property which I may solely or jointly conceive or develop or
reduce to practice during the period of time I am in the employ of the Company
(collectively referred to as "Inventions"), except as provided in Section 3(c)
below. All original works of authorship which are made by me within the scope of
and during the period of my employment with the Company and which are
protectable by copyright are "works made for hire" and the Company or its
designee shall own all rights therein. Any Invention relating to the business of
the Company and its affiliates that is developed or disclosed
<PAGE>

by me within one (1) year following the termination of my employment with the
Company shall be deemed to fall within the provisions of this Section 3(a)
unless proved to have been first conceived and made following such termination.

         (b) Patent and Copyright Registrations. I shall assist the Company, or
             ----------------------------------
its designee, at the Company's expense, in every proper way to secure the
Company's or its designee's rights in the Inventions and any copyrights, patents
or other intellectual property rights relating thereto in any and all countries.
I further agree that my obligation to execute or cause to be executed, when it
is in my power to do so, any such instrument or papers shall continue after the
termination of this Agreement. If the Company is unable because of my mental or
physical incapacity or for any other reason to secure my signature to apply for
or to pursue any application for any United States or foreign patents or
copyright registrations covering Inventions assigned to the Company as above,
then I hereby irrevocably designate and appoint the Company and its duly
authorized officers and agents as my agent and attorney in fact, to do all other
lawfully permitted acts to protect Inventions with the same legal force and
effect as if executed by me.

         (c) Exception to Assignments. I understand that the provisions of this
             ------------------------
Agreement requiring assignment of Inventions to the Company do not apply to any
Inventions made by me prior to my employment with the Company (as demonstrated
by written evidence) and that is not used with my permission by the Company or
any of its designees. I also shall retain ownership of any Inventions made by me
while employed by the Company if such Inventions are made without use of any
Company equipment, supplies, facilities or trade secret information and are
developed entirely on my own time, and (a) do not relate (1) to the business of
the Company or (2) to the Company's actual or demonstrably anticipated research
or development, or (b) do not result from any work performed by me for the
Company or its clients.

4. Conflicting Outside Activities. I agree that, except to the extent permitted
   ------------------------------
by law, during the term of my employment with the Company, I shall not have any
employment, consulting or other business relationship with any other business
enterprise, the existence of which could conflict or might reasonably be assumed
to conflict with the proper performance of my duties and responsibilities as an
employee of the Company, or which might tend to affect my independence of
judgment with respect to transactions between the Company and such other
business enterprise without prior disclosure to and approval of the Partners of
the Company. In addition, I agree that, during the term of my employment with
the Company, I will take all actions necessary to avoid the appearance of any
conflict between my personal gain and the Company's interests.

5. Notification of New Employer. In the event that I leave the employ of the
   ----------------------------
Company, I shall promptly disclose to the Company the name and address of my new
employer, and, I hereby grant consent to notification by the Company to my new
employer about my rights and obligations under this Agreement.

6. Representations. I agree to execute or verify any proper document required to
   ---------------
carry out the terms of this Agreement. I represent that my performance of all
the terms of this Agreement will not breach any agreement to keep in confidence
proprietary information acquired by me in confidence or in trust prior to my
employment by the Company. I have not entered into, and I agree I will not enter
into, any oral or written agreement in conflict with this Agreement.

7. Injunctive Relief and Other Remedies. I acknowledge and agree that my failure
   ------------------------------------
to comply with any of the terms of this Agreement shall irreparably harm the
business of the Company and that the Company shall not have an adequate remedy
at law in the event of such non-compliance. I further acknowledge and agree that
the Company shall be entitled to obtain a court order preventing me from
committing, threatening, or continuing any acts of material non-compliance with
this Agreement. I agree that the Company shall be entitled to recover from me
any and all attorneys' fees, costs and expenses its incurs in those proceedings
in enforcing or attempting to enforce any provision of this Agreement or any of
the Company's rights hereunder. All of the Company's remedies for breach of this
Agreement shall be cumulative and the pursuit of one remedy shall not be deemed
to exclude any other remedies.

8. Successors and Assigns. This Agreement shall be binding upon, and shall inure
   ----------------------
to the benefit of, the Company and me, and our respective successors and
assigns. The Company shall have the right to assign its rights hereunder to any
successor in interest, whether by merger, consolidation, sale of assets, or
otherwise.
<PAGE>

9. Entire Agreement. This Agreement is the complete agreement between the
   ----------------
parties concerning the subject matter hereof and supersedes any prior such
agreements. This Agreement may not be amended or in any way modified except in
writing signed by both parties.

10. Severability. If one or more of the provisions in this Agreement are deemed
    ------------
void by law, then the remaining provisions shall continue in full force and
effect.

11. Governing Law; Consent to Jurisdiction. I hereby expressly agree that the
    --------------------------------------
validity, interpretation, construction and performance of this Agreement shall
be governed by the laws of the State of New York without regard to its conflicts
of law principles, and that for the purposes of any suit, action or proceeding
involving this Agreement, the federal and state courts sitting in the State of
New York shall have exclusive jurisdiction.

12. Effect of Waiver. No waiver by the Company of any breach by me of any
    ----------------
provision of this Agreement shall be deemed a waiver of similar or dissimilar
provisions at the same or at any prior or subsequent time.

13. No Change in Employment Status. I acknowledge and agree that nothing
    ------------------------------
contained herein alters my status as an at-will employee of the Company.
Consequently, my employment relationship with the Company may be terminated at
any time for any reason by me or by the Company.

Date:    January 15, 2001


Signature of Employee:  /s/ Marc C. Particelli
                      ------------------------

You must return the original of this signed and dated Agreement, along with
                    --------
Exhibit A, to your HR Director. Retain a copy for your files. If you have any
questions or for some reason are unable to sign and return this Agreement,
please contact your HR Director.
<PAGE>

EXHIBIT A

List of Prior Inventions and Original Works of Authorship

Title            Date             Identifying Number or Brief Description
-----            ----             ---------------------------------------









____ No inventions or improvements
____ Additional Sheets Attached



Signature of Employee:  /s/ Marc C. Particelli