Document:

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                                                                  Exhibit 10(gg)

                              AMENDED AND RESTATED
                              --------------------
                          MARSHALL & ILSLEY CORPORATION
                          -----------------------------
                      NONQUALIFIED RETIREMENT BENEFIT PLAN
                      ------------------------------------

                                    ARTICLE I

                                     General
                                     -------

         1.1 Preamble. When Marshall & Ilsley Corporation (the "Corporation" or
             --------
"M&I") terminated its defined benefit plan (the "DBP") in 1985, it instituted a
new defined contribution plan, the Retirement Growth Plan. The funding goal of
the DBP was to provide every employee of the Corporation and its subsidiaries,
within the meaning of Section 424(f) of the Internal Revenue Code of 1986, as
amended (the "Code"), (hereinafter jointly referred to as "M&I") with a yearly
retirement benefit which, when supplemented by Social Security, equaled 60
percent of the employee's average salary for his last five full years of
employment. As a result of the termination of the DBP and (i) its replacement by
the Retirement Growth Plan and (ii) limits on qualified retirement benefits
imposed by the Internal Revenue Code, certain of M&I's highly-compensated and
longer tenure employees of a certain age as of 1985 will receive retirement
benefits, from (a) the Retirement Growth Plan, (b) the Corporation's Amended and
Restated Supplementary Retirement Benefits Plan, (c) the SERP Account of the
Corporation's Amended and Restated Deferred Compensation Plan and (d) Social
Security, which are less than this annual goal of 60 percent of average salary
(defined as base salary and annual short-term incentive before any deferral
elections) for the last five full years of employment. In order to remedy this
situation for certain highly-compensated, key employees, this plan is adopted to
provide the benefits set forth herein to those employees identified herein.

         1.2 Effective Date. This Amended and Restated Nonqualified Retirement
             --------------
Benefit Plan was originally effective as of the 12th day of December, 1991, was
amended on August 10, 1995 and June 13, 1996, and is amended and restated
effective February 22, 2001.

                                   ARTICLE II

                                   Eligibility
                                   -----------

         The persons eligible to receive benefits under this Plan are the
individuals set forth on Exhibit A hereto (individually, a "Participant" and
collectively, "Participants"). In the event the death of a Participant prior to
receiving payout of all benefits owed to him hereunder, his designated
beneficiaries (individually, a "Beneficiary" and collectively, "Beneficiaries")
shall receive the benefits owing to him hereunder. A Participant's beneficiary
designation under the Retirement Growth Plan from time to time will govern the
identity of his Beneficiaries under this Plan unless a Participant makes a
separate beneficiary designation for this Plan.

                                       1
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                                   ARTICLE III

                                    Benefits
                                    --------

         3.1 Supplemental Retirement Benefits. The monthly benefit to which each
             --------------------------------
Participant is entitled, assuming retirement from the employ of M&I or death at
age 62 or older, is as set forth on Exhibit B hereto. In the event that any of
the contingencies set forth below occurs, the benefit to which the affected
Participant is entitled will be adjusted. The monthly benefit set forth on
Exhibit B, or as adjusted below, is hereinafter referred to as the "Monthly
Benefit." The Monthly Benefit shall continue until each Participant's death, but
in all events will be paid to the Participant and/or his Beneficiaries for a
total of 120 months, except as provided in Section 3.3 below.

             (a) Supplement for Shortfall in Monthly Benefit. If the fixed
                 -------------------------------------------
         monthly benefit set forth on Exhibit B hereto does not meet the goal of
         ensuring that a Participant will receive retirement benefits from (a)
         the Retirement Growth Plan ("Retirement Growth"), (b) the Corporation's
         Amended and Restated Supplementary Retirement Benefits Plan (the
         "SERP"), (c) the SERP Account of the Corporation's Amended and Restated
         Deferred Compensation Plan ("the Deferred Compensation Plan"), (d)
         Social Security and (e) this Plan, which are equal to 60 percent of
         average base salary and annual short-term incentive (before any
         deferrals) earned for the last five full calendar years of employment
         ending prior to the Participant's 66/th/ birthday, the monthly benefit
         shall be increased to achieve such goal for those Participants who are
         active employees of M&I as of February 22, 2001. In arriving at the
         amount of the increase, if any, to which a Participant will be entitled
         under this subparagraph (a), the Participant's anticipated future
         benefits under the Retirement Growth, the SERP, the SERP Account of the
         Deferred Compensation Plan and Social Security will be determined. The
         following methodology will be employed in making such computations. The
         calculation will begin with the Participant's balances in the
         Retirement Growth, SERP and SERP Account of the Deferred Compensation
         Plan for the quarter ending with or immediately prior to the
         Participant's retirement date, but in no case later than the December
         31/st/ prior to the Participant's 66/th/ birthday ("the Determination
         Date"), and shall add in the remaining contributions to be made by the
         Corporation on the Participant's behalf if any, for the period ending
         on the earlier of the Participant's retirement date or the December
         31/st/ prior to the Participant's 66/th/ birthday. For Participants
         retiring prior to obtaining age 65, the future value of these balances
         will be computed as of the date on which payments will commence
         pursuant to Section 3.2 hereof using the average of the Moody's A Long-
         Term Corporate Bond Rate as determined under the Deferred Compensation
         Plan for the five full calendar years ending on or prior to the
         Determination Date, but in no event greater than eight percent. The
         balances will be annuitized on a single life basis using then current
         actuarial assumptions and the same interest rate determined in the
         prior sentence, in order to determine a monthly amount payable from the
         Retirement Growth, SERP and SERP Account of the Deferred Compensation
         Plan. To determine the monthly amount for Social Security, the age 65
         monthly Social Security benefit at the time of the Determination Date
         will be increased by three percent per annum for the number of full
         years between termination of employment and when the Participant would
         reach age 65.
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         The Social Security amount, along with the amounts determined as
         regards the Retirement Growth, SERP and SERP Account of the Deferred
         Compensation Plan shall be added with the amount set forth on Exhibit B
         for the Participant. If this total is less than 60% of the average of
         the base salary and annual short-term incentive (before any deferrals)
         for the last five full calendar years of employment ending prior to the
         Participant's 66/th/ birthday, such shortfall shall be added to the
         monthly benefit on Exhibit B. This increased amount shall then be
         adjusted, if required under the remainder of this Section 3.1, to
         determine the Monthly Benefit. If necessary, the Committee may direct
         the use of any other reasonable actuarial or other assumptions in
         making such computations. The computations shall be final and binding
         on the Corporation and the affected Participant.

                  (b) Death prior to Age 62. If a Participant dies prior to age
                      ---------------------
         62 while still in M&I's employ, the monthly benefit set forth opposite
         his name on Exhibit B hereto, as and if adjusted pursuant to
         subparagraph (a) hereof, shall be adjusted from the date he would have
         attained age 62 to his date of death using a 6 percent discount rate,
         compounded annually. This reduced figure shall be his Monthly Benefit.

                  (c) Disability prior to Age 62. If a Participant is disabled
                      --------------------------
         (within the meaning of the Corporation's long-term disability plan)
         while in M&I's employ prior to attaining age 62, his Monthly Benefit
         will be as set forth opposite his name on Exhibit B hereto, as and if
         adjusted pursuant to subparagraph (a) hereof, unless he dies prior to
         age 62 in which event his Monthly Benefit will be determined under
         Section 3.1(b) hereof.

                  (d) Retirement after Age 55 and prior to Age 62. If a
                      -------------------------------------------
         Participant retires from M&I's employ after attaining age 55 and prior
         to attaining age 62, and if the sum of his age at retirement plus the
         number of full years during which he has been employed by M&I equals or
         exceeds 85 (the "Rule of 85"), his monthly benefit, as set forth on
         Exhibit B hereto, as and if adjusted pursuant to subparagraph (a)
         hereof, will be adjusted from the date he would have attained age 62 to
         the date of his retirement using a 4 percent discount rate, compounded
         annually. This reduced figure shall be his Monthly Benefit. If the
         Participant does not satisfy the Rule of 85, his benefit will be
         adjusted from the date he would have attained age 62 to the date of his
         retirement using a 6 percent discount rate, compounded annually. This
         reduced figure shall be his Monthly Benefit under this Plan.

                  (e) Termination of Employment. If a Participant leaves the
                      -------------------------
         employ of M&I for any reason other than death, disability or a Change
         in Control (as defined in Section 5.2 hereof) prior to attaining age
         55, he will be entitled to no benefit whatsoever under this Plan.

                  (f) Change in Control. Notwithstanding anything herein
                      -----------------
         contained to the contrary, in the event of a Change in Control as
         defined in Section 5.2 hereof, if a Participant is still in the active
         employ of the Corporation immediately prior to the Change in Control,
         the Monthly Benefit hereunder will be as set forth in Exhibit B hereto,
         adjusted only for any increases determined pursuant to subsection (a)
         hereof,

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         regardless of (i) his age when a Change in Control occurs and (ii)
         whether he remains in the employ of M&I until age 55.

         3.2 Distributions. A Participant's Monthly Benefit shall be distributed
             -------------
to a Participant commencing on the later of (a) the first day of the month after
the Participant's 65/th/ birthday or (b) the first day of the month following
the Participant's retirement date, but in no case later than the January
following the Participant's 65th birthday. If a Participant dies prior to
attaining his 65th birthday, the Monthly Benefit shall be distributed starting
on the first day of the month after the Participant's death. Further, in the
event of a Change in Control, a Participant who has made a timely election on
the form provided by the Corporation will receive the benefits to which he is
entitled hereunder in a lump sum, computed as provided herein, within 60 days
after the Change in Control. The lump sum payment shall be determined (i)
assuming that the Monthly Benefit would be distributed for life beginning at age
65 with a 120-month certain payout, or, if the Participant's Monthly Benefit has
already been determined because of his death, retirement or other termination of
employment, using the Monthly Benefit and method of distribution then in effect
as regards such Participant, (ii) using actuarial assumptions contained in the
most recent group annuity table adopted by the Society of Actuaries as provided
by the actuaries William M. Mercer, or any successors thereto, and (iii) using a
discount rate of 6 percent, compounded annually.

         3.3 Joint and Survivor Election. If a Participant elects, prior to
             ---------------------------
commencement of distributions pursuant to Section 3.2 hereof, in the manner
provided by the Compensation Committee of the Corporation's Board of Directors,
his Monthly Benefit shall continue until his death at which point his Spouse, as
hereinafter defined, shall receive 50 percent of the Monthly Benefit until her
death, except if the Spouse is more than three years younger than the
Participant. If this is the case, the Monthly Benefit shall be reduced by one
percent for each year or partial year that the Spouse is more than three years
younger than a Participant, and the surviving Spouse shall receive 50 percent of
such lesser amount. For purposes hereof, the "Spouse" is the person to whom a
Participant is married when benefit payments hereunder commence pursuant to
Section 3.2 hereof. If the Participant and Spouse are later divorced, she loses
her status as the Spouse hereunder and is entitled to no benefits under this
Section 3.3. All payments made in accordance with this Section 3.3 shall cease
upon the last to die of the Participant and his Spouse.

                                   ARTICLE IV

                            Amendment and Termination
                            -------------------------

         4.1 Amendment and Termination. The Board of Directors of the
             -------------------------
Corporation may amend or terminate this Plan at any time; provided, however,
                                                          --------  -------
that the Board of Directors of the Corporation or any successor thereto may not
amend this Plan if a Change in Control (as defined in Section 5.2 hereof) occurs
without the unanimous written consent of the Participants then living. In
situations other than a Change in Control, amendment or termination may not
result in a reduction in the benefits of a Participant (or his Beneficiary) who
is already receiving benefits hereunder, nor may amendment or termination result
in a Participant who is still in active service (or his Beneficiary) receiving a
benefit hereunder smaller than that to which he would have been

                                       4
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entitled had the Participant terminated employment on the day prior to the
effective date of such amendment or termination, unless necessary to conform to
any present or future Federal law or regulation.

         4.2 Notice of Amendment or Termination. M&I shall notify Participants
             ----------------------------------
or Beneficiaries currently receiving benefits under the Plan of any amendment,
affecting their benefits under, or terminating, the Plan within a reasonable
time after such action.

                                    ARTICLE V

                                  Miscellaneous
                                  -------------

         5.1 No Guarantee of Employment, etc. Neither the creation of the Plan
             -------------------------------
nor anything contained herein shall be construed as giving any Participant
hereunder or other employees of M&I any right to remain in the employ of M&I.

         5.2 Change in Control. For purposes of this Plan, a Change in Control
             -----------------
shall be the first to occur of the following:

         (a) The acquisition by any individual, entity or "group" (within the
meaning of Section 13(d)(3) or 14(d)(2) of the Securities Exchange Act of 1934,
as amended (the "Exchange Act")) of beneficial ownership (within the meaning of
Rule 13d-3 promulgated under the Exchange Act) of thirty-three percent (33%) or
more of either (i) the then outstanding shares of common stock of the
Corporation (the "Outstanding Corporation Common Stock") or (ii) the combined
voting power of the then outstanding voting securities of the Corporation
entitled to vote generally in the election of directors (the "Outstanding
Corporation Voting Securities"); provided, however, that the following
                                 --------  -------
acquisitions of common stock shall not constitute a Change of Control: (i) any
acquisition directly from the Corporation (excluding an acquisition by virtue of
the exercise of a conversion privilege or by one person or a group of persons
acting in concert), (ii) any acquisition by the Corporation, (iii) any
acquisition by any employee benefit plan (or related trust) sponsored or
maintained by the Corporation or any corporation controlled by the Corporation
or (iv) any acquisition by any corporation pursuant to a reorganization, merger,
statutory share exchange or consolidation which would not be a Change of Control
under subsection (c) of this Section 5.2; or

         (b) Individuals who, as of the date hereof, constitute the Board (the
"Incumbent Board") cease for any reason to constitute at least a majority of the
Board; provided, however, that any individual becoming a director subsequent to
       --------  -------
the date hereof whose election, or nomination for election by the Corporation's
shareholders, was approved by a vote of at least a majority of the directors
then comprising the Incumbent Board shall be considered as though such
individual were a member of the Incumbent Board, but excluding, for this
purpose, any such individual whose initial assumption of office occurs as a
result of either an actual or threatened "election contest" or other actual or
threatened "solicitation" (as such terms are used in Rule 14a-11 of Regulation
14A promulgated under the Exchange Act) of proxies or consents by or on behalf
of a person other than the Incumbent Board; or

                                       5
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         (c) Consummation of a reorganization, merger, statutory share exchange
or consolidation, unless, following such reorganization, merger, statutory share
exchange or consolidation, (i) more than two-thirds (2/3) of, respectively, the
then outstanding shares of common stock of the corporation resulting from such
reorganization, merger, statutory share exchange or consolidation and the
combined voting power of the then outstanding voting securities of such
corporation entitled to vote generally in the election of directors is then
beneficially owned, directly or indirectly, by all or substantially all of the
individuals and entities who were the beneficial owners, respectively, of the
Outstanding Corporation Common Stock and Outstanding Corporation Voting
Securities immediately prior to such reorganization, merger, statutory share
exchange or consolidation in substantially the same proportions as their
ownership, immediately prior to such reorganization, merger, statutory share
exchange or consolidation, (ii) no person (excluding the Corporation, any
employee benefit plan (or related trust) of the Corporation or such corporation
resulting from such reorganization, merger, statutory share exchange or
consolidation and any person beneficially owning, immediately prior to such
reorganization, merger, statutory share exchange or consolidation, directly or
indirectly, thirty-three percent (33%) or more of the Outstanding Corporation
Common Stock or Outstanding Voting Securities, as the case may be) beneficially
owns, directly or indirectly, thirty-three percent (33%) or more of,
respectively, the then outstanding shares of common stock of the corporation
resulting from such reorganization, merger, statutory share exchange or
consolidation or the combined voting power of the then outstanding voting
securities of such corporation, entitled to vote generally in the election of
directors and (iii) at least a majority of the members of the board of directors
of the corporation resulting from such reorganization, merger, statutory share
exchange or consolidation were members of the Incumbent Board at the time of the
execution of the initial agreement providing for such reorganization, merger or
consolidation; or

         (d) Consummation of (i) a complete liquidation or dissolution of the
Corporation or (ii) the sale or other disposition of all or substantially all of
the assets of the Corporation, other than to a corporation, with respect to
which following such sale or other disposition, (A) more than two-thirds (2/3)
of, respectively, the then outstanding shares of common stock of such
corporation and the combined voting power of the then outstanding voting
securities of such corporation entitled to vote generally in the election of
directors is then beneficially owned, directly or indirectly, by all or
substantially all of the individuals and entities who were the beneficial
owners, respectively, of the Outstanding Corporation Common Stock and
Outstanding Corporation Voting Securities immediately prior to such sale or
other disposition in substantially the same proportion as their ownership,
immediately prior to such sale or other disposition, of the Outstanding
Corporation Common Stock and Outstanding Corporation Voting Securities, as the
case may be, (B) no person (excluding the Corporation and any employee benefit
plan (or related trust) of the Corporation or such corporation and any person
beneficially owning, immediately prior to such sale or other disposition,
directly or indirectly, thirty-three percent (33%) or more of the Outstanding
Corporation Common Stock or Outstanding Corporation Voting Securities, as the
case may be) beneficially owns, directly or indirectly, thirty-three percent
(33%) or more of, respectively, the then outstanding shares of common stock of
such corporation or the combined voting power of the then outstanding voting
securities of such corporation entitled to vote generally in the election of
directors and (C) at least a majority of the members of the board of directors
of such corporation were members of the Incumbent Board at

                                       6
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the time of the execution of the initial agreement or action of the Board
providing for such sale or other disposition of assets of the Corporation.

         5.3 Rights of Participants and Beneficiaries. Payment of benefits
             ----------------------------------------
hereunder to Participants or Beneficiaries shall be made only to them and upon
their personal receipts or endorsements, and there shall be no interest in any
benefits to be made prospectively, or any part thereof, nor shall the
expectation of such benefits be assignable in or by operation of law, or be
subject to reduction for the debts or defaults of such Participants or
Beneficiaries whether to M&I or to others. Notwithstanding the foregoing, M&I
shall withhold from any amounts payable hereunder any taxes or other amounts
required by any governmental authority to be withheld.

         5.4 No Requirement to Fund. No provision in this Plan, either directly
             ----------------------
or indirectly, shall be construed to require M&I to reserve, or otherwise set
aside, funds for the payment of benefits hereunder. Nothing contained in this
Plan shall create or be construed to create a trust of any kind, or a fiduciary
relationship between the Plan and a Participant, his Beneficiary or any other
person. To the extent that any person acquires a right to receive payment from
M&I under this Plan, such right shall be no greater than the right of any
unsecured general creditor of M&I.

         5.5 Controlling Law. To the extent not preempted by the laws of the
             ---------------
United States of America, the laws of the State of Wisconsin, without regard to
its conflict of law provisions, shall be the controlling state law in all
matters relating to the Plan and shall apply.

         5.6 Severability. If any provisions of the Plan shall be held illegal
             ------------
or invalid for any reason, said illegality or invalidity shall not affect the
remaining parts of the Plan, but this Plan shall be construed and enforced as if
said illegal and invalid provisions had never been included herein.

         5.7 Gender and Number. Masculine gender shall include the feminine, and
             -----------------
the singular shall include the plural, unless the context clearly indicates
otherwise.

         5.8 Status of Plan under ERISA. This Plan is intended to be an unfunded
             --------------------------
plan maintained by an employer primarily for the purpose of providing deferred
compensation for a select group of management or highly compensated employees,
as described in Section 201(2), Section 301(a)(3), Section 401(a)(1) and Section
4021(b)(6) of the Employee Retirement Income Security Act of 1974, as amended.

         5.9 Facility of Payment. If, in M&I's judgement, any person entitled to
             -------------------
make an election or to receive payment of a benefit is physically, mentally, or
legally prevented from so doing, M&I may make such election or may authorize
payment of such benefit to any person who, or institution which, in M&I's
judgment, is responsible for caring for the person entitled to the benefit. If
an amount becomes distributable to a minor or a person under legal disability,
M&I may direct that such distribution may be made to such person without the
intervention of any legal guardian or conservator, to a relative of such person
for the benefit of such person or to the legal guardian or conservator of such
person. Any such distributions shall constitute a full

                                       7
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discharge with respect to M&I, and M&I shall not be required to see to the
application of any distribution so made.

         5.10 Identity of Payee. If at any time any doubt exists as to the
              -----------------
identity of any person entitled to payment of any benefit hereunder or as to the
amount or time of any such payment, such sum shall be held by M&I until the
final order of a court of competent jurisdiction or M&I may pay such sum into a
court of competent jurisdiction in accordance with any lawful procedure in such
case made and provided.

         5.11 Claims Procedure. The Participant or his Beneficiary (a
              ----------------
"Claimant") may file a written request for benefits or claim with M&I under this
Plan. In the event of any dispute with respect to such a claim, the following
claim procedures shall apply:

              (1) M&I, acting as the administrator under this Plan, shall notify
         the Claimant within 90 days of receipt by M&I of a written claim of its
         allowance or denial, unless the Claimant receives written notice from
         M&I prior to the end of the initial 90-day period indicating that
         special circumstances require an extension of time (by not more than 90
         days) for decision. A written notice of decision shall be provided to
         the Claimant and if the claim is denied in whole or in part, the notice
         shall contain the following information: the specific reasons for the
         denial; specific reference to pertinent provisions of the Plan on which
         the denial is based; if applicable, a description of any additional
         material information necessary to perfect the claim and an explanation
         of which such material or information is necessary; and an explanation
         of the claim review procedure.

              (2) A Claimant is entitled to request a review of any denial of
         his claim by M&I. The request for review must be submitted in writing
         within 60 days of mailing of notice of the denial. Absent a request for
         review within the 60-day period, the claim will be deemed to be
         conclusively denied. The Claimant or the Claimant's representative
         shall be entitled to review all pertinent documents, and to submit
         issues and comments orally and in writing. M&I shall render a review
         decision in writing, within 60 days after receipt of a request for a
         review, provided that, in special circumstances (such as the necessity
         of holding a hearing) M&I may extend the time for decision by not more
         than 60 days upon written notice to the Claimant. The Claimant shall
         receive written notice of the separate review decision of M&I together
         with specific reasons for the decision and reference to the pertinent
         provisions of this Plan.

         5.12. Administration. The Plan shall be administered by the M&I
               --------------
Executive Compensation Committee (the "Committee) which shall have full and
exclusive power to interpret the Plan and to adopt such rules, regulations and
guidelines for carrying out the Plan as it may deem necessary or proper. The
Committee may delegate any of its administrative duties to any M&I employee.
Actions by the Committee hereunder shall be final and binding on the
Participants and M&I.

                                       8
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                                    EXHIBIT A

         James B. Wigdale
         Dennis J. Kuester
         Michael J. Revane
         Gordon H. Gunnlaugsson
         Gary D. Strelow
         Michael A. Hatfield

                                       9
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                                    EXHIBIT B

Name                                       Monthly Benefit
----                                       ---------------
Wigdale                                    $24,167
Kuester                                    $23,167
Gunnlaugsson                               $14,958
Revane                                     $ 8,333
Strelow                                    $ 5,167
Hatfield                                   $ 3,292

                                       10<PAGE>   1

                              EMPLOYMENT AGREEMENT

               EMPLOYMENT AGREEMENT dated as of January 1, 2000 (this
"Agreement"), by and between Eugene Amobi (the "Executive") and XYBERNAUT
CORPORATION, a Delaware corporation (the "Company").

               WHEREAS, the Executive has been employed by the Company as a Vice
President, Government Affairs of the Company; and

               WHEREAS, the Company desires to continue the employment of the
Executive as the Company's Vice President, Government Affairs and the Executive
desires to be employed by the Company in the aforementioned capacity, all upon
the terms and provisions, and subject to the conditions set forth in this
Agreement.

               NOW, THEREFORE, in consideration of the foregoing and the mutual
covenants and agreements contained herein, and other good and valuable
consideration, the receipt and legal sufficiency of which are hereby
acknowledged, the parties hereby agree as follows:

               Section 1. Definitions. As used in this Agreement the following
terms shall have the meanings set forth in this Section 1:

                    (a) "Affiliate" of any Person means any stockholder or
person or entity controlling, controlled by under common control with such
Person, or any director, officer or key executive of such Person or any of their
respective relatives. For purposes of this definition, "control," when used with
respect to any Person, means the power to direct the management and policies of
such Person, directly or indirectly, whether through the ownership of voting
securities, by contract or otherwise; and the terms "controlling" and
"controlled" have meanings that correspond to the foregoing.

                    (b) "Cause" shall mean (i) the Company being subjected to
any criminal liability under any applicable law as a result of any action or
inaction on the part of the Executive; (ii) the conviction or admission of the
Executive of, or plea by the Executive of nolo contendere to, a felony or crime;
(iii) if the Executive is chronically addicted to any narcotic or other illegal
or controlled substance or repeatedly abuses any alcoholic product or any
prescription stimulants or depressant, as determined by a physician designated
by the Company; (iv) the Executive committing fraud, or stealing or
misappropriating any asset or property of the Company, including, without
limitation, any theft or embezzlement or the usurpation of a corporate
opportunity; (v) a breach of a material term or provision of this Agreement by
the Executive, which is not cured within ten (10) days after written notice of
such breach; (vi) the violation of any of the Company's written policies which
are from time to time in effect; or (vii) the failure of the Executive to follow
the lawful directives of the President of the Company or the Board of Directors
of the Company.

<PAGE>   2

                    (c) "Change of Control" shall mean the occurrence of the
following: (i) a Person or group of Persons, other than any current member of
the Board of Directors, obtain beneficial ownership of at least thirty percent
(30%) of the outstanding capital stock of the Company; (ii) a change in the
membership of more than fifty percent (50%) of the current Board of Directors in
any twelve (12) month period. "Common Stock" shall mean the common stock, par
value $.01 per share, of the Company, and any other class of common stock of the
Company created after the date of this Agreement in accordance with the
Company's Certificate of Incorporation and applicable law.

                    (d) "Competing Business" shall mean any business, enterprise
or other Person that as one of its businesses or activities, is engaged in the
business of manufacturing, selling, marketing, licensing or distributing
wearable computers or the solutions associated therewith or any other business
or activity that is engaged in by the Company or any Affiliate of the Company.

                    (e) "Confidential and Proprietary Information" shall mean
any and all (i) confidential or proprietary information or material not in the
public domain about or relating to the business, operations, assets or financial
condition of the Company or any Affiliate of the Company or any of the Company's
or any such Affiliate's trade secrets, including, without limitation, research
and development plans or projects; data and reports; computer materials such as
programs, instructions and printouts; formulas; product testing information;
business improvements, processes, marketing and selling strategies; strategic
business plans (whether pursued or not); budgets; unpublished financial
statements; licenses; pricing, pricing strategy and cost data; information
regarding the skills and compensation of executives; the identities of clients
and potential clients; intellectual property strategies and any work on any
patents, trademarks and tradenames, prior to any filing or the use thereof in
commerce; pricing, timing, sales terms, service plans, methods, practices,
strategies, forecasts, know-how and other marketing techniques, source codes,
object codes, algorithms, the nature of any patents or patent applications; and
(ii) information, documentation or material not in the public domain by virtue
of any action by or on the part of the Executive, the knowledge of which gives
or may give the Company or any Affiliate of the Company an advantage over any
Person not possessing such information. For purposes hereof, the term
Confidential and Proprietary Information shall not include any information or
material (i) that is known to the general public other than due to a breach of
this Agreement by the Executive or (ii) was disclosed to the Executive by a
Person who the Executive did not reasonably believe was bound to a
confidentiality or similar agreement with the Company.

                    (f) "Discretionary Bonus" shall have the meaning given to
that term in Section 4(c) hereof.

                    (g) "Employment Term" shall have the meaning given to that
term in Section 2 hereof.

                    (h) "Good Reason" shall mean a (i) substantial change to or
reduction in the duties or responsibilities of the Executive such that the
responsibilities of the Executive are no longer commensurate with the
Executive's office with the Company as set forth herein; (ii) the occurrence of
a Change of Control; (iii) a change in the Executive's office from that of Vice

                                       2

<PAGE>   3

President, Government Affairs which is not concurred in by the Executive within
three (3) months of its occurrence; or (iv) the breach of a material term or
provision of this Agreement by the Company which is not cured by the Company
within ten (10) business days after written notice of said breach is received by
the Company from the Executive.

                    (i) "Incapacity" shall mean any illness or mental or
physical incapacity or disability which prevents the Executive from performing
his duties or obligations hereunder for a continuous period of ninety (90)
consecutive days or for shorter periods aggregating one hundred twenty (120)
days within any consecutive twelve (12) month period.

                    (j) "Inventions" shall mean inventions, discoveries,
concepts and ideas, whether patentable or not, patents, patent applications,
copyrights and other intellectual property, including, without limitation,
processes, methods, formulae and techniques, and improvements thereof or
know-how related thereto, concerning any business activity of the Company or any
Affiliate of the Company, with which the Executive becomes, directly or
indirectly, involved as a result in whole or in part, directly or indirectly, of
the Executive's employment by the Company, or any Affiliate of the Company, and
whether conceived of solely by the Executive or jointly with the efforts of
others.

                    (k) "Person" shall mean, without limitation, any natural
person, corporation, partnership, limited liability company, joint stock
company, joint venture association, trust or other similar entity or firm.

                    (l) "Salary" shall have the meaning given to that term in
Section 4(a) hereof.

                    (m) "Without Cause" shall mean the termination of the
Executive's employment hereunder by the Company, other than termination by the
Company due to the Executive's death or Incapacity or based upon Cause.

               Section 2. Employment and Term. The Company hereby employs the
Executive as the Vice President, Government Affairs of the Company and the
Executive hereby accepts such employment in that capacity, upon the terms and
provisions, and subject to the conditions, set forth in this Agreement, for a
term of three (3) years, commencing on January 1, 2000, and terminating on
December 31 2003, unless earlier terminated as provided in this Agreement (the
"Employment Term").

               Section 3. Executive's Duties. (a) The Executive shall be Senior
Vice President, Government Affairs of the Company responsible for overseeing, if
directed so by the Company's CEO and President or Vice Chairman, the Company's
business dealings with the United States federal government and state government
including contractual relationships with the federal and state governments. The
Executive shall perform such other duties as may be assigned to the Executive by
the Company's President or the Board of Directors of the Company.

                   (b) The Executive shall devote all of his business time,
effort, skill and attention exclusively to the business, operations and affairs
of the Company and to the furtherance of the interests, business and prospects
of the Company. The Executive shall

                                       3
<PAGE>   4

perform the Executive's duties and obligations hereunder diligently,
competently, faithfully and to the best of his ability.

                   (c) The Executive agrees to execute policy statements and
agreements that the Company may, from time to time, require all of its senior
executive officers to execute.

               Section 4. Compensation; Salary, Options, Bonus. (a) In
consideration of the performance of all of the duties and obligations to be
performed by the Executive hereunder, the Company agrees to pay, and the
Executive agrees to accept, for the Employment Term, a salary (the "Salary") at
an annual rate of $140,000, payable in accordance with the Company's regular
payroll practices as from time to time in effect, less all withholdings and
other deductions required to be deducted in accordance with any applicable
federal, state, local or foreign law, rule or regulation.

                   (b) In consideration of the Executive's execution and
delivery of this Agreement, upon the execution and delivery of this Agreement
the Company shall grant to the Executive, effective as of the date hereof, the
right to purchase 150,000 (one hundred fifty thousand) shares of Common Stock at
the closing price on January 3, 2000 that shall vest over three (3) years, in
increments of fifty thousand (50,000) shares each year on December 31 of each
year commencing on December 31, 2000 through December 31, 2002; provided that
the Employee remains employed by the Company as of that date. The grant of
options to the Employee shall be the Company's stock option plan in effect at
the time of grant.

                   (c) The Company may, in its sole and absolute discretion, pay
a discretionary bonus to the Employee for each full year of the Employment Term
that the Executive is employed by the Company, based upon the performance of the
Executive during such year as well as the Company's overall performance during
such year (the "Discretionary Bonus"). It is acknowledged and agreed that the
Company has made no representation, warranty or guaranty that the Discretionary
Bonus will be paid for any particular year.

                   (d) All options granted to the Executive pursuant to this
Agreement or referred to herein, to the extent permitted by applicable law,
shall be transferable and assignable. Any unvested options granted to the
Executive hereunder shall fully vest upon a Change of Control or upon a
termination of this Agreement by the Executive for Good Reason.

               Section 5. Benefits, Vacation. (a) During the Employment Term,
the Executive shall be entitled to such insurance and health and medical
benefits as are generally made available to the senior executives of the
Company, as a group, pursuant to such plans as are from time to time maintained
by the Company; provided, however, that the Executive shall be required to
comply with the conditions of coverage attendant to such plans.

                   (b) During each contract year of the Employment Term, the
Executive shall be entitled to four (4) weeks of vacation. The Executive shall
take vacation at such time or times as the Executive desires, subject to the
concurrence of the Company based upon the then current business needs and
activities of the Company. Vacation shall accrue if unused during the term of
employment.

                   (c) During the Employment Term, the Executive shall be
eligible to

                                       4
<PAGE>   5

participate in the profit sharing and other benefit plans that the Company from
time to time makes available to the senior executives of the Company as a group,
subject to the terms, provisions and conditions of such plans, including,
without limitation, any vesting periods and eligibility criteria.

               Section 6. Business Expenses, etc. (a) The Executive shall be
entitled to reimbursement for ordinary, necessary and reasonable business
expenses actually incurred by the Executive during the Employment Term in the
performance of the Executive's duties hereunder, if supported by such reasonable
documentation as may be required by the Company in accordance with the Company's
policies.

                   (b) The Company shall also provide the Executive with a
non-accountable expense allowance of $1,875 per month during each month of the
Employment Term. The Executive shall be responsible for all taxes (including,
without limitation, withholding taxes) and other charges which may be payable in
connection with such allowances

               Section 7. Termination of Employment Term. (a) In the event of
the death of the Executive during the Employment Term, the Executive's
employment hereunder shall automatically terminate as of the date of death;
provided, however, that the Executive or the Executive's legal representative,
as the case may be, shall be entitled to receive, and the Company shall pay, (i)
any accrued and unpaid Salary for a three (3) month period from the date of
termination, less any amounts received by the Executive under any disability
insurance policy maintained by the Company; and (ii) reimbursement of business
expenses which are properly owing to the Executive pursuant to Section 6(a)
hereof, through the date of termination.

                   (b) In the event of the Executive's Incapacity, the Company
may, in its sole discretion, terminate the Executive's employment hereunder upon
written notice to the Executive; provided, however, that the Executive or the
Executive's legal representative, as the case may be, shall be entitled to
receive, and the Company shall pay, (i) any accrued and unpaid Salary for a
three (3) month period from the date of termination, less any amounts received
by the Executive under any disability insurance policy maintained by the
Company; and (ii) reimbursement of business expenses which are properly owing to
the Executive pursuant to Section 6(a) hereof, through the date of termination.

                   (c) The Company shall have the right to terminate the
Executive's employment under this Agreement at any time for Cause upon written
notice to the Executive. In the event the Executive's employment hereunder is
terminated by the Company for Cause, the Company shall only be obligated to pay
accrued and unpaid Salary through the date of termination and the Company shall
pay any accrued and unreimbursed business expenses which are properly owing to
the Executive pursuant to Section 6 hereof through the date of termination.

                   (d) The Company shall have the right to terminate the
Executive's employment hereunder Without Cause at any time upon ten (10) days'
prior written notice to the Executive. If the Company terminates the Executive's
employment hereunder Without Cause, the Company shall (i) continue to pay Salary
to the Executive provided for hereunder for a period equal to the greater of (x)
eighteen (18) months from the date of termination and (y) the remaining period
of the Employment Term and (ii) pay any unreimbursed business expenses

                                       5
<PAGE>   6

which are properly owing to the Executive pursuant to Section 6(a) hereof
through the date of termination.

                   (e) The Executive shall have the right to terminate his
employment with the Company hereunder for Good Reason, upon not less than thirty
(30) days prior written notice to the Company. Should the Executive terminate
his employment hereunder for Good Reason, the Company shall be obligated to make
the payments to the Executive provided for in Section 7(d) hereof upon the
termination of the Executive's employment by the Company Without Cause.

                   (f) Except as may be required pursuant to applicable law (for
example, in the case of COBRA) upon the termination of the Executive's
employment, the Company shall not be obligated to provide any benefits to the
Executive which were provided at any time during the Employment Term.

                   (g) The failure of the Company to continue the employment of
the Executive upon expiration of the entire three (3) year Employment Term shall
not be considered a termination of employment for purposes of this Agreement.

               Section 8. Inventions. Any Inventions originated or conceived by
the Executive related to the Company's business during his employment by the
Company or any Affiliate of the Company or with the use or assistance of the
facilities, materials or personnel of the Company or any Affiliate of the
Company, either solely or jointly with others, during the Employment Term shall
be the sole and exclusive property of the Company. The Executive hereby
irrevocably assigns and transfers to the Company and agrees to transfer and
assign to the Company all of his right, title and interest in and to all
Inventions, and to applications for patents and patents granted upon such
Inventions and to all copyrightable material related thereto developed by the
Executive or under his supervision. The Executive agrees for himself and his
heirs and personal representatives, upon the request of the Company and at the
Company's expense, to do such acts, to execute such documents and instruments
and to participate in such legal proceedings as from time to time may be
necessary or required to apply for, secure, maintain, reissue, extend or defend
the worldwide rights of the Company in the Inventions. The Executive here grants
to the Company a power of attorney, which is irrevocable and coupled with an
interest, to execute any such documents and instruments if the Executive is
unable or fails to do so, after the request by the Company as provided in the
immediately preceding sentence. The Executive shall have no right to receive any
royalties or other payments from the Company with respect to any Inventions.

               Section 9. Restrictions Respecting Competing Businesses,
Confidential Information, etc. The Executive acknowledges and agrees that by
virtue of the Executive's position and involvement with the business and affairs
of the Company, the Executive will develop substantial expertise and knowledge
with respect to all aspects of the Company's business, affairs and operations
and will have access to all significant aspects of the business and operations
of the Company and to Confidential and Proprietary Information. The Executive
acknowledges and agrees that the Company will be damaged if the Executive were
to breach any of the provisions of this Section 9 or if the Executive were to
disclose or make unauthorized use of any Confidential and Proprietary
Information. Accordingly, the Executive expressly

                                       6
<PAGE>   7

acknowledges and agrees that the Executive is voluntarily entering into this
Agreement and that the terms, provisions and conditions of this Section 9 are
fair and reasonable and necessary to adequately protect the Company.

                   (a) The Executive hereby covenants and agrees that, during
the Employment Term and thereafter, unless otherwise authorized by the Company
in writing, the Executive shall not, directly or indirectly, under any
circumstance: (i) disclose to any other Person (other than in the regular course
of business of the Company) any Confidential and Proprietary Information, other
than pursuant to applicable law, regulation or subpoena or with the prior
written consent of the Company; (ii) act or fail to act so as to impair the
confidential or proprietary nature of any Confidential and Proprietary
Information; (iii) use any Confidential and Proprietary Information related to
the Company's business other than for the sole and exclusive benefit of the
Company; or (iv) offer or agree to, or cause or assist in the inception or
continuation of, any such disclosure, impairment or use of any Confidential and
Proprietary Information. Following the Employment Term, the Executive shall
return all documents, records and other items containing any Confidential and
Proprietary Information to the Company (regardless of the medium in which
maintained or stored), without retaining any copies, notes or excerpts thereof,
or at the request of the Company, shall destroy such documents, records and
items (any such destruction to be certified by the Executive to the Company in
writing).

                   (b) The Executive covenants and agrees that, while the
Executive is employed by the Company and for one (1) year after the Executive
ceases to be employed by the Company for any reason, the Executive shall not,
directly or indirectly, manage, operate or control, or participate in the
ownership, management, operation or control of, or otherwise become interested
in (whether as an owner, stockholder, partner, lender, consultant, executive,
officer, director, agent, supplier, distributor or otherwise) any Competing
Business or, directly or indirectly, induce or influence any Person that has a
business relationship with the Company, or any Affiliate of the Company, to
discontinue or reduce the extent of such relationship; provided that if the
Executive's employment with the Company was terminated pursuant to Section 7(d)
or 7(e) hereof, the Company shall continue to make the payments to the Executive
required by those Sections. For purposes of this Agreement, the Executive shall
be deemed to be directly or indirectly interested in a business if he is engaged
or interested in that business as a stockholder, director, officer, executive,
agent, partner, individual proprietor, consultant, advisor or otherwise, but not
if the Executive's interest is limited solely to the ownership of not more than
2% of the securities of any class of equity securities of a corporation or other
Person whose shares are listed or admitted to trade on a national securities
exchange or are quoted on NASDAQ or a similar means if NASDAQ is no longer
providing such information.

                   (c) While the Executive is employed by the Company and for
two (2) years after the Executive ceases to be an employed by the Company, the
Executive shall not, directly or indirectly, solicit to employ or employ for
himself or others any employee of the Company or any Affiliate of the Company
who was an employee of the Company or any Affiliate of the Company as of the
date of the termination of the Executive's employment with the Company or during
the preceding twelve (12) month period, or solicit any such employee to leave
such employee's employment or join the employ of another, then or at a later
time.

                   (d) The parties agree that nothing in this Agreement shall be
construed

                                       7

<PAGE>   8

to limit or negate the common law of torts, confidentiality, trade secrets,
fiduciary duty and obligations where such laws provide the Company with any
broader, further or other remedy or protection than those provided herein.

                   (e) Because the breach of any of the provisions of this
Section 9 may result in immediate and irreparable injury to the Company for
which the Company may not have an adequate remedy at law, the Company shall be
entitled, in addition to all other rights and remedies, to a decree of specific
performance of the restrictive covenants contained in this Section 9 and to a
temporary and permanent injunction enjoining such breach, without posting a bond
or furnishing similar security.

               Section 10. Severability. Each term and provision of this
Agreement is severable; the invalidity, illegality or unenforceability or
modification of any term or provision of this Agreement shall not affect the
validity, legality and enforceability of the other terms and provisions of this
Agreement, which shall remain in full force and effect. Since it is the desire
and intent of the parties that the provisions of this Agreement be enforced to
the fullest extent permissible under the laws and public policies applied in
each jurisdiction in which enforcement is sought, should any particular
provision of this Agreement be deemed invalid, illegal or unenforceable, the
same shall be deemed reformed and amended to delete that portion that is
adjudicated to be invalid, illegal or unenforceable and the deletion shall apply
only with respect to the operation of such provision and to the extent of such
provision and, to the extent that a provision of this Agreement would be deemed
unenforceable by virtue of its scope, but may be made enforceable by limitation
thereon, each party agrees that this Agreement shall be reformed and amended so
that the same shall be enforceable to the fullest extent permissible under the
laws and public policies applied in the jurisdiction in which enforcement is
sought.

               Section 11. Assignment. This Agreement and the rights and
obligations of the parties hereto shall be binding upon and inure to the benefit
of each of the parties hereto, the heirs, executors, administrators and legal
representatives of the Executive and the successors and permitted assigns of the
Company. Neither this Agreement nor any rights or benefits hereunder may be
assigned by the Executive or the Company without the prior written consent of
the other party hereto, except that the Company may assign any of its rights or
obligations hereunder to any other Person which purchases all or substantially
all of the Common Stock or assets of the Company or is the successor to the
Company by merger, consolidation, recapitalization or other similar transaction.

               Section 12. Amendment; Entire Agreement. This Agreement may not
be modified, amended, altered or supplemented except by a written agreement
executed by the parties hereto. This Agreement contains the entire agreement and
understanding of the parties hereto with respect to the subject matter of this
Agreement and supersedes all prior and/or contemporaneous agreements and
understandings of any kind and nature (whether written or oral) between the
parties with respect to such subject matter, all of which are merged herein.

               Section 13. Waivers. Waiver by either party of either breach of
or failure to comply with any provision of this Agreement by the other party
shall not be construed as, or constitute, a continuing waiver of such provision,
or a waiver of any other breach of, or failure to comply with, any other
provision of this Agreement, and shall be limited to the specific matter

                                       8

<PAGE>   9

and instance for which it is given. No waiver of any such breach or failure or
of any term or condition of this Agreement shall be effective unless in a
written instrument and signed by the waiving party and delivered, in the manner
required for notices hereunder, to the affected party.

               Section 14. Notices. All notices, consents, directions,
approvals, instructions, requests and other communications required or permitted
by the terms of this Agreement to be given to any person shall be in writing,
and shall be delivered personally or sent by certified mail, return receipt
requested (postage prepaid) or by telecopy, to the parties at the following
addresses or telecopy numbers, as applicable:

               If to the Executive:

                   Eugene Amobi
                   Xybernaut Corporation
                   12701 Fair Lakes Circle
                   Suite 550
                   Fairfax, VA 22033
                   Telecopier: (703) 631-7070

               If to the Company:

                   Xybernaut Corporation
                   12701 Fair Lakes Circle
                   Suite 550
                   Fairfax, VA 22033
                   Attention: President
                   Telecopier: (703) 631-7070

                   and a copy to Xybernaut Corporation, Chief Financial Officer

               With a copies to:

                   Parker Chapin LLP
                   The Chrysler Building
                   405 Lexington Avenue
                   New York, NY 10174
                   Attention: Martin Eric Weisberg, Esq.
                   Telecopier: (212) 704-6288

or to such other address as a party may have furnished to the other parties in
writing in accordance herewith. Any notice, consent, direction, approval,
instruction, request or other communication given in accordance with this
Section 14 shall be effective after it is received by the intended recipient.

               Section 15. Governing Law; Jurisdiction. THIS AGREEMENT SHALL BE
GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE COMMONWEALTH OF
VIRGINIA APPLICABLE TO AGREEMENTS MADE AND TO BE PERFORMED IN THAT STATE,
WITHOUT REGARD OR REFERENCE TO ITS

                                       9
<PAGE>   10

PRINCIPLES OF CONFLICTS OF LAWS. THIS AGREEMENT SHALL BE CONSTRUED AND
INTERPRETED WITHOUT REGARD TO ANY PRESUMPTION AGAINST THE PARTY CAUSING THIS
AGREEMENT TO BE DRAFTED. EACH OF THE PARTIES UNCONDITIONALLY AND IRREVOCABLY
CONSENT TO THE EXCLUSIVE JURISDICTION OF THE COURTS OF THE COMMONWEALTH OF
VIRGINIA AND THE FEDERAL DISTRICT COURT FOR THE NORTHERN DISTRICT OF VIRGINIA
WITH RESPECT TO ANY SUIT, ACTION OR PROCEEDING ARISING OUT OF OR RELATING TO
THIS AGREEMENT, AND EACH OF THE PARTIES WAIVE ANY RIGHT TO CONTEST THE VENUE OF
SAID COURTS OR TO CLAIM THAT SAID COURTS CONSTITUTE AN INCONVENIENT FORUM. EACH
OF THE PARTIES UNCONDITIONALLY AND IRREVOCABLY WAIVES THE RIGHT TO A TRIAL BY
JURY IN ANY ACTION, SUIT OR PROCEEDING ARISING OUT OF OR RELATING TO THIS
AGREEMENT.

               Section 16. Headings; Counterparts. The headings contained in
this Agreement are inserted for reference purposes only and shall not in any way
affect the meaning, construction or interpretation of this Agreement. This
Agreement may be executed in two (2) counterparts, each of which, when executed,
shall be deemed to be an original, but both of which, when taken together, shall
constitute one and the same document.

               IN WITNESS WHEREOF, the Executive and the Company have executed
this Agreement as of the date first above written.

                                                     ---------------------------
                                                     Eugene Amobi

                                                     XYBERNAUT CORPORATION

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

                                       10

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