Document:

Exhibit 10.1

                          AMENDMENT TO EXCLUSIVE PATENT
                    AND RELATED TECHNOLOGY LICENSE AGREEMENT

         THIS AMENDMENT TO EXCLUSIVE PATENT AND RELATED TECHNOLOGY LICENSE
AGREEMENT ("Amended Agreement") is made as of March 14, 2002 by and between
Datamarine International, Inc., a Washington corporation (together with all of
its subsidiaries, hereinafter "Licensor"), with its principle place of business
located at 7030 220th Street, S.W., Mountlake Terrace, Washington 98043 and
BIZCOM U.S.A., INC., a Florida corporation (hereinafter "Licensee"), with its
principle place of business located at 5440 NW 33rd Avenue, Suite 106, Fort
Lauderdale, Florida 33309 (the signatories to this Amended
Agreement being referred to individually as a "Party" hereto and collectively as
"Parties" hereto.

                              W I T N E S S E T H:
                              --------------------

         WHEREAS, the parties to this Amended Agreement previously entered into
an Exclusive Patent and Related Technology Agreement dated as of February 1,
2002 (the Agreement"); and

         WHEREAS, the parties hereto desire to amend certain terms of the
Agreement as provided for herein, which amended terms as provided for herein
shall supercede such terms in the Agreement;

         NOW, THEREFORE, for and in consideration of the covenants, conditions
and undertakings hereinafter set forth, and for other good and valuable
consideration, the receipt and sufficiency of which is acknowledged by the
parties hereto, the parties hereto agree to amend the Agreement as follows:

         Capitalized terms not defined herein shall have the same meaning as is
set forth in the Agreement.

         Licensee and Licensor each desire that Licensee, in consultation with
Licensor, be granted an additional 30 days from and including March 1, 2002 to
pursue entering into a sub-license agreement with a third party on terms and
conditions satisfactory to Licensee in its sole discretion to make, use and sell
the Licensed Products. Concurrent with the execution of this Amended Agreement
by the parties hereto, Licensee shall pay Licensor an additional $55,000, which
shall constitute the additional $55,000 payment discussed in paragraph 4.3 of
the Agreement. If such sub-license agreement is consummated within such time
period, Licensee shall not be required to pay Licensor any additional monies
pursuant to paragraph 4.3 of the Agreement, but shall, as provided for in
paragraph 4.3 of the Agreement, without anything further, be deemed to and shall
assume from Licensor a past due and existing $416,000 obligation of Licensor to
two entities for radio equipment previously ordered by such entities from
Licensor.

         In the event Licensee does not for whatever reason(s) enter into
the above- contemplated sub-license agreement within 30 days from and including
March 1, 2002, in lieu of Licensee assuming such past due and existing $416,000
obligation, Licensee shall make the

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following additional payments to Licensor: $80,000 payable 30 days from March 1,
2002; $80,000 payable 30 days after such initial $80,000 payment; $55,000
payable 30 days after such second $80,0000 payment; $70,000 payable 30 days
after such $55,000 payment; $70,000 payable 30 days after such first $70,000
payment; and $59,000 payable 30 days after such second $70,000 payment. Such
payment terms and provisions shall supercede the payment terms and provisions
otherwise set forth in paragraph 4.4 of the Agreement.

         All other terms, conditions and provisions of the Agreement shall
remain unchanged and in full force and effect.

         This Amended Agreement may be executed in counterparts and via
telecopier.

         IN WITNESS WHEREOF, the parties hereto have executed this Amended
Agreement under seal effective as of the date first set forth above.

                                        LICENSOR:

                                        DATAMARINE INTERNATIONAL, INC.

                                        By:  /s/ Joseph L. Stephens
                                            ----------------------------
                                            Joseph L. Stephens,
                                            Chairman of the Board of Directors

STATE OF MISSISSIPPI                )
                                    )SS:
COUNTY OF SIMPSON                   )

         The foregoing instrument was acknowledged before me on this 20day of
March, 2002 by Joseph L. Stephens, as Chairman of the Board of Directors of
Datamarine International, Inc., a Washington corporation, on behalf of such
corporation who is personally known to me or has produced drivers license as
identification and did/did not take an oath.

                             Notary Public:

                             sign /s/Cindy Jennings

                             print Cindy Jennings
                                   --------------
                             State of  Mississippi at Large (Seal)

                             My Commission Expires: Mississippi Statewide Notary
                             Public
                             My Commission Expires July 5, 2004

                                        2
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                                            LICENSEE:

                                            BIZCOM U.S.A., INC.

                                            By: /s/ Hank Klein
                                                ------------------
                                                Hank Klein, President

STATE OF FLORIDA           )
                           )SS:
COUNTY OF BROWARD          )

         The foregoing instrument was acknowledged before me this 14 day of
March, 2002 by Hank Klein, as President of BIZCOM U.S.A., INC., a Florida
corporation, on behalf of such corporation who is personally known to me or has
produced Fl Drivers Lic as identification and did/did not take an oath.

                                         Notary Public:

                                         sign /s/ Marissa McCabe
                                              ------------------
                                         print Marissa McCabe
                                               --------------
                                         State of Florida at Large (Seal)

                                         My Commission Expires: Marissa McCabe
                                         Notary Public, State of Florida
                                         My commis. expires Feb.  14, 2006

FOR GOOD AND VALUABLE CONSIDERATION, THE RECEIPT AND SUFFICIENCY OF WHICH IS
ACKNOWLEDGED, ACKNOWLEDGED AND AGREED TO:

SEA, Inc.

By: /s/ David Thompson
    -------------------
        David Thompson, President

STATE OF WASHINGTON   )
                      )SS:
COUNTY OF SNOHONISH   )

         The foregoing instrument was acknowledged before me this 14 th day of
March, 2002 by David Thompson, as President of SEA, Inc., a Delaware
corporation, on behalf of such corporation who is personally known to me or has
produced Washington Drivers License as identification and did/did not take an
oath.

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                                            Notary Public:

                                            sign /s/ Jennifer Niblett
                                                 --------------------

                                            print Jennifer Niblett
                                                  ----------------
                                            State of Washington at Large (Seal)

                                            My Commission Expires: 11-09-04

                                       4CONSULTING AGREEMENT

AGREEMENT dated 10/29/2001, between Public Safety Group a Missouri L.L.C., (the
"Consultant" or "PSG") located at 10605 Gay Terrace, Upper Marlboro, Maryland,
20772, and BIZCOM U.S.A. Inc., a Florida corporation (the "Company") located at
5440 NW 33rd Avenue, Suite 106, Fort Lauderdale, Florida, 33309.

WHEREAS, the Company wishes to retain the Consultant as an independent
contractor, to provide certain business consulting services to the Company
concerning disaster and emergency management and related services, and the
Consultant wishes to be retained by the Company in such capacity and perform
such services for the Company on the terms and conditions set forth herein.

THEREFORE, the parties hereto agree as follows:

         a. Consulting.
            ----------

         (1) Company hereby retains Consultant and Consultant hereby accepts
         such engagement, for the term and under the conditions specified
         herein, as a consultant to the Company , with such duties and
         responsibilities as may reasonably be assigned to the Consultant
         pursuant to this Agreement. The Consultant's compensation shall be that
         specified below.

         (2) Consultant's principal duties shall include, at such times as shall
         be reasonably requested by the Company, reporting on the current state
         of the disaster and emergency management affairs in the U.S. and
         assisting the Company in integrating emergency management software
         offered by one or more companies, as is planned to be further discussed
         by the Company and the Consultant, into a 220 MHz SMR wireless
         application (the "Integrated Solution"). In addition, PSG will provide
         the Company with a detailed strategy on how to market the Integrated
         Solution to different state and local agencies. Consultant shall have
         no authority to negotiate, accept, reject, or modify any contract
         entered into by the Company or otherwise bind the Company to any
         agreement with any third parties concerning the Integrated Solution or
         otherwise, and shall at all times hereunder be an independent
         contractor and not be construed to be an agent of the Company

         (3) PSG shall bill the Company for the services to be rendered
         hereunder at the hourly rate of $150, and provide the Company with
         written evidence of consulting services rendered and monthly invoices
         and statements that will be billed against and reduce the Promissory
         Note (in the form attached hereto as Exhibit A, which the Consultant
         shall execute and deliver to the Company as of the date hereof) in the
         principle amount of $30,000 which aggregate amount has been paid by the
         Company to the Consultant on 10/29/2001 as an advance against the
         Consultant's fees. However, to the extent that consulting services
         aggregating $30,000 have not been requested by the Company within 90
         days from the date hereof, PSG will repay the Promissory Note in
         accordance with the terms and conditions thereof.

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         (4) The Consultant shall devote Consultant's best efforts to its duties
         hereunder and shall cause Edward W. Lent III to be the primary provider
         of the consulting services to be provided by the Consultant hereunder
         for and on behalf of the Consultant. However, it is expressly agreed
         that Consultant may serve as a consultant, manager, investor, or
         employee to other persons, without limitation except that during the
         term of this Agreement neither the Consultant nor its officers,
         directors, employees and affiliates, including Edward W. Lent III shall
         consult on any services directly or indirectly concerning the
         Integrated Solution to any other person or entity.

         (5) The principal place of business where the Consultant shall render
         its services hereunder shall be at such place or places as the Company
         and the Consultant may reasonably agree.

         b. Status.
            ------

The Consultant shall be treated in all respects as an independent contractor and
the Company shall not withhold any taxes on account of services rendered to it
by Consultant. Consultant represents to Company that Consultant regularly holds
itself out as a consultant to others in the area of emergency management
services, maintains its own office, has business cards other than for the
services provided to Company , and assumes all risk of Consultant's
classification as an independent contractor and not an employee.

         c. Term of Agreement.
            -----------------

The term for which Consultant shall be retained hereunder shall commence on the
date hereof and shall terminate upon the earlier of: (i) the last day of the
ninety (90) days following the date of this Agreement, unless this Agreement is
earlier terminated by the Company with or without cause, and without any
liability to the Company, its officers directors and agents, in which case the
principle amount then due and owing under the Promissory Note, together with
applicable interest shall, be due and payable.

         d. Notices.
            -------

All notices and other communications hereunder shall be in writing and shall be
deemed given if delivered personally or mailed, by either registered mail or
certified mail return receipt requested, or via telecopie (Consultant's
telecopie number: 301-599-2316 Company's telecopie number: 954-714-0086) or via
email (Consultant's email: blent@sdsintl.net, Company's email:
koukol@hotmail.com) to the parties hereto at the addresses set forth above, or
at such other address for a party as shall be specified by notice given pursuant
hereto ("Notice").

                                                                     Page 2 of 3
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         e. Waiver.
            ------

The failure of Consultant or Company to seek redress for violation of, or to
insist upon the strict performance of any covenant or condition of this
Agreement shall not prevent a subsequent act, which constitutes a violation,
from having all the force and effect of a violation.

         f. Miscellaneous.
            -------------

         (1) This Agreement constitutes the entire agreement between the parties
         hereto, supersedes all existing agreements between them, and cannot be
         changed or terminated except by a written agreement signed by the
         parties and may not be assigned by either party.

         (2) This Agreement shall be construed in accordance with the laws of
         the State of Florida, without regard to a conflict or choice of law
         principles. Any action and/or proceeding relating to or arising out of
         this Agreement and/or the Promissory Note, including but not limited to
         the enforcement of terms and conditions of the Promissory Note shall be
         brought in the federal and/or state court, located in Broward County,
         Florida. The prevailing party in any such action and/or proceeding
         shall be entitled to recover its reasonable attorney's fees and costs
         from the other party.

         g. Rule of Construction That Ambiguities to be Construed Against
         ----------------------------------------------------------------
         Drafter Not Applicable.
         -----------------------

As both of the parties to this Agreement have had the opportunity to consult
with their respective legal counsel concerning the terms and conditions of this
Agreement and the Promissory Note, the rule of construction that ambiguities
shall be construed against drafter shall be not applicable, to this Agreement or
the Promissory Note.

BIZCOM U.S.A. Inc.

By: /S/ Hank Klein, President
    -------------------------

Public Safety Group L.L.C.

By: /S/ Edward W. Lent III, President
   ----------------------------------

                                                                     Page 3 of 3
<PAGE>

                                 PROMISSORY NOTE

Principal amount $ 30,000                                       Date: 10/29/2001

         PUBLIC SAFETY GROUP A MISSOURI L.L.C. (the "Maker"), FOR VALUE
RECEIVED, hereby promises to pay to the order of BIZCOM U.S.A. INC, a Florida
corporation (the "Holder"), at the office of the Holder 5440 N.W. 33rd Avenue,
Fort Lauderdale, FL, the principal amount of THIRTY THOUSAND DOLLARS ($30,000)
in lawful money of the United States of America. The unpaid principal balance of
this Note shall bear simple interest from the date set forth above at the rate
of ten percent (10%) (computed on the basis of a 360-day year) per annum.
Interest and principal on this Promissory Note shall be payable as follows:

         Paid in full ninety (90) days from the date of the Promissory Note
(10/29/2001), less the aggregate amount of the consulting fees billed through
such date to the Holder and otherwise in accordance with all the terms and
conditions as set forth in the Consulting Agreement by and between the Maker and
the Holder dated 10/29/2001 (the "Consulting Agreement"), which is incorporated
herein by reference (collectively, the "Due Date")

         All payments shall be first applied to interest and the balance to
principal. This Promissory Note may be prepaid, at any time, in whole or in
part, without penalty (each such payment being a minimum of $10,000 or equal to
the unpaid balance on the Promissory Note).

         This Promissory Note shall be immediately due and payable upon the
occurrence of any of the following (a "Default"): 1) Failure to make any payment
due hereunder within ten (10) days of its Due Date; 2) Breach of any of the
terms and conditions of the Consulting Agreement; or 3) Upon the filing by the
undersigned of an assignment for the benefit of creditors, bankruptcy or other
form of insolvency, or by suffering an involuntary petition in bankruptcy or
receivership not vacated within thirty (30) days.

         In the event this Promissory Note shall be in Default and placed for
collection, then the undersigned agrees to pay all reasonable attorney's fees
and costs of collection. Payments not made within ten (10) days of the Due Date
shall accrue interest at the highest rate then permitted by law. All payments
hereunder shall be made to such address as may from time to time be designated
by the Holder.

         This Promissory Note is referred to in, and arises out of the
transactions described in the Consulting Agreement, and is subject to the terms
and conditions of the Consulting Agreement.

         The Maker agrees to remain fully bound hereunder until this Promissory
Note shall be fully paid (or is otherwise satisfied, in the Holder's sole
discretion), waives demand, presentment, protest, dishonor, notice of dishonor,
and all notices hereto and further agrees to remain bound, notwithstanding any
extension, modification or waiver. No modification or indulgence by the Holder
hereof shall be binding unless in writing; and any waiver on any one occasion
shall not be construed to be a waiver for any other or future occasion.

                                                                    Page 1 of 2
<PAGE>

         This Promissory Note has been executed and delivered and shall be
construed and enforced in accordance with the laws of the State of Florida,
without regard to conflict or choice of law principles. The Maker of this
Promissory Note shall be responsible for the timely payment of all required
intangible taxes, if any, in connection with the issuance hereof.

         This Promissory Note may be assigned by the Holder in whole or in part
to any third party.

Witnessed:

/S/ Charles Renier                           /S/ Edward W. Lent III, President
---------------------------                  ---------------------------------
Witness                                      Maker

                                                                     Page 2 of 2

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