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                                                                    Exhibit 10.4

                              EMPLOYMENT AGREEMENT

     AGREEMENT made as of the 1st day of January, 1999, by and between WILTEK,
INC., a Connecticut corporation, with its principal offices located at 542
Westport Avenue, Norwalk CT 06851 (the "Company") and Kevin P. Carathanasis, an
individual, residing at 8515 Manassas Road, Tampa, Florida 33635 (the
"Employee").


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

     WHEREAS, the Company desires that the Employee shall be employed by the
Company, and the Employee is desirous of such employment, upon the terms and
conditions set forth in this Agreement.

     NOW, THEREFORE, in consideration of the foregoing and the mutual covenants
and agreements contained herein, the parties hereto agree as follows:


    1. Defining Terms.  As used in this Agreement, the following terms shall 
       --------------                                                  
       have the following meanings:

               (a)  "Company" shall mean and include Wiltek, Inc., and its
                    parents, subsidiaries and affiliates and the respective
                    successors and assigns of any of them, whether now existing
                    or hereafter arising: provided, however, that references to
                    the Company in Paragraphs 6, 7 and 9 of this Agreement shall
                    be limited solely to Wiltek, Inc.

               (b)  "Customer" shall mean any individual, firm, partnership,
                    corporation, company, joint venture or governmental or
                    military unit or any other entity or any parent, subsidiary
                    or affiliate of any of them which is negotiating or has a
                    contract with the Company for the purchase or lease of the
                    Company's equipment, products or services or which has been
                    solicited by the Company with respect to such purchase or
                    lease during the Employee's employment with the Company.

               (c)  "Confidential Information" shall mean information concerning
                    the Company, its products, processes and services and its
                    customers, suppliers, contractors, agents, consultants and
                    employees (herein-after referred to as "Company
                    Affiliates"), including, but not limited to, information
                    relating to research, development. inventions, manufacture,
                    purchasing, accounting, finances, costs, profit margins,
                    patents, methods, programs, apparatus, engineering,
                    marketing, merchandising, selling, Customer lists, Customer
                    requirements and personnel, pricing, pricing methods and
                    data processing and any other materials

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                    or information, heretofore or hereafter during the term of
                    this Agreement, conceived, designed, created, used or
                    developed by or relating to the Company or any of the
                    Company Affiliates; provided, however, that Confidential
                    Information shall not include any information which may be
                    in the public domain or come into the public domain not as a
                    result of a breach by the Employee of any of the terms and
                    provisions of this Agreement.

               (d)  "Proprietary Property" shall mean discoveries, concepts and
                    ideas and expressions thereof, whether or not subject to
                    patent, copyright, trademark, trade name or service mark
                    protection, including, but not limited to, software,
                    services, processes, methods, formulae, techniques,
                    apparatus, designs and writings as well as improvements
                    thereon, revisions thereof and know-how related thereto,
                    concerning any present or future activities of the Company;
                    provided, however, that Proprietary Property shall not
                    include anything which may be in the public domain or come
                    into the public domain not as a result of a breach by the
                    Employee of any of the terms and provisions of this
                    Agreement.

               (e)  "Competing Product" shall mean any product, process or
                    service of any person or legal entity other than the
                    Company, in existence or under development, which, during
                    the term of this Agreement, competes with or is an
                    alternative to any present or future product, process, or
                    service of the Company whether or not actively marketed by
                    the Company.

               (f)  "Competing Organization" shall mean any person or legal
                    entity engaged in, about to engage in or intending to engage
                    in research on or development, use, production, marketing,
                    or selling of a Competing Product.

2.   Employment.  The Company hereby employs the Employee, and the Employee
     ----------                                                            
     hereby accepts such employment, upon the terms and conditions set forth in
     this Agreement.

3.   Duties.  The Employee shall be employed by the Company as Vice President
     ------                                                                  
     and he shall perform such duties and render such services consistent
     therewith as may from time to time be required of him by the President of
     the Company.

4.   Extent of Service.  During the term of his employment, the Employee
     -----------------                                                  
     agrees that (a) he will serve the Company faithfully, diligently and to the
     best of his ability under the direction of the Chairman or the Board of
     Directors of the Company; (b) he will devote his best efforts and
     substantially  his entire working time, attention and energy to the
     performance of his duties hereunder and to promoting and furthering the
     interests of the Company, taking, however, from time to time, reasonable
     vacations consistent with the performance of his obligations hereunder, and
     (c) he will not, without the prior written approval of the President of the
     Company, which approval shall not be unreasonably withheld, become an
     officer, director, employee or consultant of, or otherwise become
     associated with or engaged in, any business other than that of the Company,
     and he will do nothing inconsistent with his duties to the Company.

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5.   Terms of Employment.  The term of employment of the Employee under this
     -------------------                                                    
     Agreement shall be for a period commencing on the date of this Agreement
     and terminating twelve (12) months thereafter, unless sooner terminated
     pursuant to Paragraph 9 of this Agreement (the "Term"), and for successive
     one-year Terms thereafter; provided, however, that with respect to each
     such successive Term, the Company and the Employee shall have mutually
     agreed, in writing, to basic compensation for such successive Term. If the
     Company decides not to renew the Employee's Employment Agreement, then the
     Employee shall be entitled to the termination provisions provided for in
     Clause 9(b) of this Employment Agreement.

6.   Basic Compensation.  As basic compensation for the services to be
     ------------------                                               
     rendered hereunder by the Employee for the initial Term, the Company agrees
     to pay to the Employee, and the Employee agrees to accept, a minimum salary
     at the rate of $110,000 per annum.  The salary payable to the Employee
     hereunder shall be paid in equal semi-monthly installments during the Term,
     or in such other manner as shall be mutually agreed upon by the parties
     hereto.

7.   Other Benefits.  The Employee shall be entitled to participate in any
     --------------                                                       
     retirement, disability, profit-sharing, medical or life insurance or other
     similar plan or arrangement provided by the Company to its employees, or
     its other executive employees.  The Employee shall also receive benefits as
     stated within the attached "Schedule of Benefits."

8.   Disability.  If Employee shall be disabled, he shall receive full
     ----------                                                       
     compensation (less any payments received from Worker's Compensation,
     Wiltek's disability plans or other governmental payment for such
     disability) for all periods of disability even if a period of disability
     extends beyond the Term; provided, however, that the maximum number of
     consecutive days during which disability occurs and for which Wiltek shall
     be obligated to pay such compensation shall be ninety (90) days. Disability
     means the inability of Employee to perform his duties hereunder on account
     of mental or physical illness or physical incapacity.

9.   Termination.
     ----------- 

     (a)  The employment of the Employee hereunder shall terminate in the event
          of the death of the Employee and, at the option of the Company, upon
          written notice to the Employee, (i) in the event that Base Salary
          payments are terminated due to disability pursuant to Paragraph 8 of
          this Agreement, or (ii) in the event that the Employee shall breach
          any of the terms and provisions of this Agreement.

     (b)  In addition to the provisions of Paragraph 9(a) above, the Company may
          also, in its sole discretion, elect to terminate, without cause, the
          employment of the Employee hereunder by thirty (30) days prior written
          notice to the Employee; provided, however, that if the Company shall
          so terminate this Agreement pursuant to this Paragraph 9(b), the
          Company shall pay the Employee guaranteed severance pay in accordance
          with the next sentence, continue the benefits set forth in Item 2 of
          the attached "Schedule of Benefits" for so long as the severance
          payments are being made, will continue the benefit set forth in Item 1
          thereof for the terms thereof and will pay the bonuses set forth in
          Item 6 thereof per the terms thereof. During the six-month period
          following the receipt of written notice by the Employee, the Company
          shall pay the Employee guaranteed severance pay at a rate equal to the
          Employee's base compensation immediately prior to such termination and
          such guaranteed severance pay shall be paid to the Employee in the
          manner and at the time or times that such base compensation would
          otherwise have been paid to the Employee. Following the six-month
          guaranteed severance pay period, if the Employee does not become
          employed, the Company shall pay the Employee additional supplemental
          severance pay in accordance with the next sentence. During the six-
          month period following the conclusion of Company payment to the
          Employee of six months of guaranteed severance pay, the Company shall
          pay the Employee additional supplemental severance pay at a rate equal
          to the Employee's base compensation immediately prior to such
          termination and such additional supplemental

          severance pay shall be paid to the Employee in the manner and at the
          time or times that such base compensation would otherwise have been
          paid to the Employee.

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     10.      Representations and Warranties of the Employee as to Conflicts.
              --------------------------------------------------------------  
     The Employee hereby represents and warrants to the Company that his
     employment by the Company does not and will not violate any provision of
     law or fiduciary duty by which he is bound and will not conflict with or
     result in a breach of any agreement or instrument to which he is a party or
     by which he is bound, and the Employee agrees that he will indemnify and
     hold harmless the Company, its directors, officers and employees against
     any claims, damages, liabilities and expenses (including attorneys' fees)
     which may be incurred, including amounts paid in settlement, by any of them
     in connection with any claim based upon or related to a breach of the
     Employee's representation and warranty set forth in this Paragraph. In the
     event of any claim based upon or related to a breach of the Employee's
     representation and warranty set forth in this Paragraph 10, the Company
     will give prompt notice thereof, in writing, to the Employee and the
     Employee shall have the right to defend such claim with counsel reasonably
     satisfactory to the Company.

     11.      Proprietary Property.  With respect to Proprietary Property made
              --------------------                                            
     or conceived by the Employee in the field of data communications, whether
     or not during the hours of his employment or with the use of the Company's
     facilities, materials or personnel, either individually or jointly with
     others during the period of his employment by the Company, the Employee
     shall, without the payment of royalty or any other considerations to him
     therefor:

               (a)  Inform the Company promptly and fully of such Proprietary
                    Property by a written report satisfactory to the Company;

               (b)  Apply, at the Company's requests and expense, for United
                    States and foreign letters patent, copyright, trademark or
                    service mark, as the case may be, either in the Employee's
                    name or otherwise as the Company shall direct;

               (c)  Assign to the Company all of his right, title and interest
                    in such Proprietary Property, and to applications for United
                    States and/or foreign letters patent, copyright, trademark
                    and service mark and to any letters patent, copyright,
                    trademark and service mark which may be issued upon such
                    Proprietary Property;

               (d)  Deliver promptly to the Company, without charge to the
                    Company but at its expense, such written instruments, and do
                    such other acts, as may be necessary, in the opinion of the
                    Company, to obtain and maintain United States and/or foreign
                    letters patent, copyright, trademark or service mark on the
                    Proprietary Property and to vest the entire right, title and
                    interest thereto in the Company; and

               (e)  Grant to the Company, prior to assignment of the Employee's
                    right title and interest to the Company in any Proprietary
                    Property as required above, the royalty-free right to use in
                    its business, and to make, have made, use and sell products,
                    processes, services, writings and/or marks based upon or
                    related to Proprietary Property made or conceived by the
                    Employee.

     12.  Confidentiality.
          --------------- 

                (a) During the Term and at all times thereafter, the Employee
will not use Confidential Information for his own benefit or for the benefit of
any person or legal entity other than the Company nor will he disclose the same
to any other person or legal entity, except as required to conduct the business
of the Company in the ordinary course.

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                (b) Except with the prior written approval of the Company or
except as required to conduct the business of the Company in the ordinary
course, the Employee will not, at any time, directly or indirectly, use,
disseminate, disclose, lecture upon or publish articles concerning any
Confidential Information.


                (c) Upon the termination of his employment with the Company, all
documents, records, notebooks and similar repositories of or containing
Confidential Information, including any copies thereof, then in the Employee's
possession, or under his control, whether prepared by him or others, will be
left with or immediately returned to the Company by the Employee.

          13. Non-Compete.  The Employee agrees that, during the term of his
              -----------                                                   
              employment with the Company and also for one year following the
              Employee's termination or departure from the Company, he will not,
              without the written approval of the Company, directly or
              indirectly, under any circumstances whatsoever, own, manage,
              operate, engage in, control or participate in the ownership,
              management, operation or control of, or be connected in any manner
              with, whether as an individual, partner, stockholder, director,
              officer, principal, agent, employee or consultant, or in any other
              relation or capacity whatsoever, any Competing Organization, and
              will not in any such manner compete with the Company or solicit or
              call on any Customer of the Company, wherever located, which was a
              Customer of the Company at any time during the period one (1 year
              prior to the termination of the Employee's employment with the
              Company for the purpose of inducing such Customer to purchase or
              lease a Competing Product. Notwithstanding the foregoing, nothing
              contained in this Paragraph 13 shall restrict the Employee from
              making any investment in any company whose stock is listed on a
              national securities exchange or actively traded in the over-the-
              counter market, so long as such investment does not give him the
              right to control or influence the policy decisions of any such
              business or enterprise which is or might be in competition with
              any business of the Company.

          14. Non-Interference.  The Employee will not, for a period of one (1)
              ----------------       
              year following the termination of the Employee's employment by the
              Company, directly or indirectly, employ, hire, solicit or, in any
              manner, encourage any employee of the Company to leave the employ
              of the Company.

          15. Injunctive Relief.  In addition to any other rights or remedies 
              -----------------                                      
              available to the Company as a result of the breach of the
              Employee's obligations hereunder, the Company shall be entitled to
              enforcement of such obligations by an injunction or a decree of
              specific performance from a court with appropriate jurisdiction
              and in the event that the Company is successful in any suit or
              proceeding brought or instituted by the Company to enforce any of
              the provisions of this Agreement or on account of any damages
              sustained by the Company by reason of the violation by the
              Employee of any of the terms and/or provisions of this Agreement
              to be performed by the Employee, the Employee agrees to pay to the
              Company all attorneys' fees reasonably incurred by the Company.
 
          16. Withholding.  The Employee hereby agrees that he will make such
              -----------                                                    
              arrangements as the Company may deem necessary to discharge any
              obligations of the Company to withhold Federal, state or local
              taxes imposed upon the Company in respect of this Agreement.

          17. Severability.  The provisions of this Agreement shall be 
              ------------     
              severable and if any part of any provision shall be held invalid
              or unenforceable or any separate covenant contained in any
              provision is held to be unduly restrictive and void by a final
              decision of any court or other tribunal of competent jurisdiction,
              such part, covenant or provision shall be construed to give it
              maximum lawful validity and the remaining provisions of this
              Agreement shall nonetheless remain in full force and effect.

          18. Entire Agreement.  This Agreement and the attached "Schedule of 
              ----------------                                             
              Benefits" contains the entire agreement of the parties relative to
              the subject matter hereof, superseding and terminating all prior
              agreements or understandings, whether oral or written, between the
              parties hereto relative to the subject matter hereof,

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              and this Agreement may not be extended, amended, modified or
              supplemented without the written consent of the parties hereto.

          19. Waivers.  Any waiver of the performance of the terms or 
              -------                                                 
              provisions of this Agreement shall be effective only if in writing
              and signed by the party against whom such waiver is to be
              enforced. The failure of either party to exercise any of his or
              its rights under this Agreement or to require the performance of
              any term or provision of this Agreement, or the waiver by either
              party of any breach of this Agreement, shall not prevent a
              subsequent exercise or enforcement of such rights or be deemed a
              waiver of any subsequent breach of the same or any other term or
              provision of this Agreement.

          20. Notices.  Any notice required or permitted to be given under this
              -------                                                          
              Agreement shall be in writing and shall be deemed given when
              personally delivered or sent by registered or certified mail,
              postage prepaid, return receipt requested, to the respective
              address of the parties hereto as set forth above or to such other
              address as either party may designate to the other party in the
              manner provided herein for giving notice.

          21. Successors and Assigns.  This Agreement shall be binding upon and
              ----------------------                                   
              inure to the benefit of the heirs, executors, administrators,
              successors and legal representatives of the Employee, and shall
              inure to the benefit of and be binding upon the Company and any
              successor to the business of the Company pursuant to a merger or
              acquisition of all or substantially all of its assets, but the
              obligations of the Employee may not be delegated and the Employee
              may not assign, transfer, pledge, encumber, hypothecate or
              otherwise dispose of this Agreement, or any of his rights
              hereunder (whether by operation of law or otherwise), except as
              expressly permitted by this Agreement, and any such attempted
              delegation or disposition shall be null and void and without
              effect.

          22. Governing Law.  This Agreement shall be governed by and construed
              -------------                                           
              and enforced in accordance with the laws of the State of
              Connecticut.

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

                                    WILTEK, INC.

                                    By: /s/ David S. Teitelman
                                       ------------------------------
                                         President & Board Member
 

                                    By: /s/ Kevin P. Carathanasis
                                       ------------------------------
                                         Kevin P. Carathanasis
                                         Vice President

WITNESS:

/s/ Cindy Hampton
--------------------------

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                              Schedule of Benefits

1.  Company Car.  Company obligation is direct payment of, or reimbursement to
    ------------                                                              
    the Employee, for all lease payments, tax payments, insurance payments,
    gasoline payments, service payments, repair payments, maintenance payments.
    This benefit will continue for two (2) months after termination.

2.  Company Standard Benefits.  Health, major medical, dental, eye care,
    --------------------------                                          
    orthodontia, life insurance, short-term disability, long-term disability,
    401K contribution, in addition to individual benefits provided within this
    section ("Schedule of Benefits") to the Employee.

3.  Annual Minimum Base Salary.  $110,000.
    ---------------------------           

4.  Guaranteed Severance Pay.  Six (6) months of Annual Minimum Base Salary.
    -------------------------                                               

5.  Supplemental Severance Pay.  If employment not found by Employee following
    ---------------------------                                               
    Guaranteed Severance Pay Period, an additional six (6) months of Annual
    Minimum Base Salary.

6.  Revenue Bonus.  If Wiltek reports fiscal year 1999 revenue (excluding any
    --------------                                                           
    revenue for business's acquired after January 1, 1999) of at least

        $6,800,000 then a cash bonus of .30% of total fiscal year 1999 revenue
        $7,000,000 then a cash bonus of .32% of total fiscal year 1999 revenue
        $7,200,000 then a cash bonus of .34% of total fiscal year 1999 revenue
        $7,400,000 then a cash bonus of .36% of total fiscal year 1999 revenue
        $7,600,000 then a cash bonus of .38% of total fiscal year 1999 revenue
        $7,800,000 then a cash bonus of .40% of total fiscal year 1999 revenue
        $8,000,000 then a cash bonus of .42% of total fiscal year 1999 revenue
        $8,200,000 then a cash bonus of .44% of total fiscal year 1999 revenue
        $8,400,000 then a cash bonus of .46% of total fiscal year 1999 revenue
        $8,600,000 then a cash bonus of .48% of total fiscal year 1999 revenue
        $8,800,000 then a cash bonus of .50% of total fiscal year 1999 revenue

The Company shall make full cash bonus payment to Employee within 60 days
(December 30, 1999) of close of fiscal year 1999.  In the event of termination
any bonus accumulated as of the date of termination will be payable by the
Company to the Employee within 30 days of termination.

        IN WITNESS WHEREOF, the parties have executed this Schedule of Benefits
as of the date first above written.

                                    WILTEK, INC.

                                    By: /s/ David S. Teitelman
                                       ------------------------------
                                         President & Board Member
 

                                    By: /s/ Kevin P. Carathanasis
                                       ------------------------------
                                         Kevin P. Carathanasis
                                         Vice President
WITNESS:

/s/ Cindy Hampton
--------------------------

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