<PAGE>

                                                                   Exhibit 10.19

                              Consulting Agreement

THIS AGREEMENT made as of September 1, 2002 between Veitia and Associates, Inc.,
of 220 Central Parkway, Suite 2060, Altamonte Springs, Florida 32701 (the
"Consultant") and International Assets Holding Corporation, of 220 Central
Parkway, Suite 2060, Altamonte Springs, Florida 32701 (the "Principal").

IN CONSIDERATION OF the mutual covenants, terms and agreements herein contained,
and for other good and valuable consideration, the receipt and sufficiency of
which is hereby acknowledged, the parties hereto hereby agree as follows:

1.   Services. The Consultant shall, during the Term (as defined below) provide
     services in the following areas (the "Services") to the Principal, at such
     times as the Principal may reasonably request: administration, sales and
     marketing, public relations and other matters requested by the Principal.

2.   Compensation. The Principal shall pay to the Consultant the sum of $1,000
     for each day of providing Services under this Agreement whether at the
     Principal's premises or elsewhere, or a proportionate share thereof for any
     period less than a day; provided, however, the amount payable by the
     Principal to the Consultant pursuant to this Agreement shall not exceed the
     sum of $140,000 in any twelve month period during the Term. For the
     purposes hereof, a day shall have eight (8) working hours. The Principal
     shall reimburse the Consultant for all reasonable expenses up to $60,000
     per annum and any other authorized in advance by the Principal and incurred
     in connection with this Agreement.

     The Consultant shall submit monthly invoices to the Principal for its
     compensation and related expenses during the preceding month. The Principal
     shall pay to the Consultant such invoices within thirty (30) days after
     receipt of the invoice accompanied by vouchers or receipts evidencing such
     expenses. The Consultant shall maintain complete and accurate accounting
     records, in a form in accordance with sound accounting practices, to
     substantiate its invoices hereunder. Such records shall include payroll
     records, job cards, attendance cards and job summaries. The Consultant
     shall retain such records for one year from the date of final payment under
     this Agreement. The Principal shall have access to such records for
     purposes of credit during normal business hours during the Term and during
     the period in which the Consultant is required to maintain such records as
     herein provided.

3.   Term. This Agreement shall commence on September 1, 2002 and shall remain
     in effect until August 31, 2005 (the "Term"), provided that the parties
     may, in writing, agree to extend the Term. Notwithstanding the foregoing,
     this Agreement may be terminated at any time at the option of one party,
     upon the failure of the other party to comply with the covenants, terms and
     agreements of this Agreement and upon notice of such failure to such other
     party.

     Upon any termination of this Agreement, the Consultant shall deliver to the
     Principal all written or descriptive matter which has been developed,
     maintained or copied by the Consultant in furtherance of this Agreement, or
     which may contain Confidential Information (as defined below),

<PAGE>

     including, but not limited to drawings, files, lists, plans, blueprints,
     papers, documents, tapes or any other such media. The Consultant shall
     secure all such written or descriptive matter in locked files at all times
     to prevent their loss or unauthorized disclosure, and to segregate
     Confidential Information at all times from the material of others. In the
     event of loss or destruction of any such written or descriptive matter, the
     Consultant shall promptly notify the Principal of the particulars of the
     same in writing.

4.   Confidential Information.

     (a)  For the purposes of this Agreement, the term "Confidential
          Information" means all information disclosed to, or acquired by, the
          Consultant, its employees or agents in connection with, and during the
          term of this Agreement which relates to the Principal's past, present
          and future research, developments, systems, operations and business
          activities, including, without limiting the generality of the
          foregoing:

          (i)  all items and documents prepared for, or submitted to, the
               Principal in connection with this Agreement, and

          (ii) all information specifically designated by the Principal as
               confidential;

          (iii) but shall not include any information which was known to the
               Consultant, its employees or agents prior to the date hereof, or
               which was publicly disclosed otherwise than by breach of this
               Agreement.

     (b)  The Consultant acknowledges that pursuant to the performance of its
          obligations under this Agreement, it may acquire Confidential
          Information. The Consultant covenants and agrees, during the Term and
          following any termination of this Agreement, to hold and maintain all
          Confidential Information in trust and confidence for the Principal and
          not to use Confidential Information other than for the benefit of the
          Principal. Except as authorized in writing by the Principal, the
          Consultant covenants and agrees not to disclose any Confidential
          Information, by publication or otherwise, to any person other than
          those persons whose services are contemplated for the purposes of
          carrying out this Agreement, provided that such persons agree in
          writing to be bound by, and comply with the provisions of this
          paragraph. The Consultant shall obtain similar covenants and
          agreements to those contained in this paragraph for the benefit of the
          Principal from each of its employees or agents who are, or may be,
          exposed to Confidential Information.

5. Termination Provisions.

     (a)  Termination

          (i)  The Consultant's services hereunder shall automatically terminate
               (A) upon the death or Disability (as hereinafter defined) of
               Diego J. Veitia; (B) upon written notice by the Principal for
               "Cause" (as hereinafter defined); or (C) upon 30 days written
               notice by either party.

          (ii) For purposes of this Agreement, "Disability" shall mean that
               Diego J. Veitia is unable to perform his duties hereunder on
               behalf of the Consultant for three consecutive months after
               reasonable accommodation by the Principal.

                                        2

<PAGE>

         (iii) For purposes of this Agreement, the Principal shall have "Cause"
               to terminate the Consultant's services hereunder upon (A) the
               willful failure by the Consultant to substantially perform the
               Consultant's duties (other than any such failure resulting by the
               Disability of Diego J. Veitia) and continuance of such failure
               for more than 30 days after the Principal notifies the Consultant
               in writing of the failure to perform; (B) the engaging by the
               Consultant in willful misconduct which is injurious to the
               Principal; or (C) a finding by the National Association of
               Securities Dealers, Inc. (the "NASD"), another self-regulatory
               body of competent jurisdiction (the "SRO"), or U.S. Securities
               and Exchange Commission (the "SEC") that the Consultant violated
               its rules or regulations, and such finding or penalty therefor
               restricts the Consultant's ability to perform its obligations
               under this Agreement. Notwithstanding the foregoing, the
               Consultant shall not be deemed to have violated rules or
               regulations of the NASD, an SRO, or the SEC, if a finding or
               penalty imposed is based upon a finding that the Consultant did
               not adequately supervise an employee, but was not otherwise a
               party to the acts constituting the misconduct by such other
               person. Further, the Consultant shall not be deemed to have been
               terminated for Cause unless and until there has been delivered to
               the Consultant notice that a resolution has been duly adopted by
               the Board which finds that the Principal has "Cause" to terminate
               the Consultant as contemplated in Section 5(a), provided, that
               the Consultant is terminated for Cause upon the revocation of any
               license required under applicable law for the conduct of the
               business of the Principal by the Consultant.

     (b)  Compensation Upon Termination. If either (i) the Principal shall
          terminate the employment of the Consultant for Cause pursuant to the
          provisions of Section 5(a) hereof, or (ii) the Consultant shall
          terminate its services (other than as a result of the violation of
          this Agreement by the Principal), then the Principal shall pay the
          Consultant 100% of the compensation set forth in Section 2 hereof for
          30 days following the date of termination of this Agreement. If the
          Principal shall terminate the employment of the Consultant without
          Cause or the Consultant resigns as a result of a breach by the
          Principal of its obligations to the Consultant, whether set forth
          herein or otherwise, then the Principal shall pay the Consultant 100%
          of the maximum compensation set forth in Section 2 hereof for the
          remainder of the Term.

6. Rights in Data.

     (a)  All of the items prepared for or submitted to the Principal under this
          Agreement (the "Items") shall belong exclusively to the Principal. The
          Consultant hereby assigns to the Principal the ownership of copyright
          in the Items and the Principal shall have the right to obtain and
          hold, in its own name, copyrights, registrations and similar
          protection which may be available in the Items. The Consultant shall
          give the Principal or its designees all assistance reasonably required
          to perfect such rights.

     (b)  To the extent that any pre-existing materials are contained in the
          Items, the Consultant grants to the Principal an irrevocable,
          non-exclusive, worldwide, royalty-free license to (i) use, execute,
          reproduce, display, perform, distribute (internally or externally)
          copies of, and prepare derivative works based upon the Items and (ii)
          authorize others to do any, some or all of the foregoing.

     (c)  The Consultant shall have the right to publish any information
          resulting from its performance under this Agreement in a manner which
          preserves the Principal's copyright in the Items, after obtaining the
          Principal's prior written approval, which approval shall not be
          unreasonably withheld; provided that any such approval may be
          conditional upon

                                        3

<PAGE>

          reasonable alterations or deletions to ensure that Confidential
          Information is not published. The Consultant agrees to delay
          publication of any invention which the Principal has decided to, or is
          in the process of deciding to, seek patent protection for a period not
          to exceed six (6) months from the date that such material is disclosed
          to the Principal for approval.

     (d)  No license or right is granted to the Consultant either expressly or
          by implication, estoppel or otherwise, to publish, reproduce, prepare
          derivative works based upon, distribute copies of, publicly display,
          or perform, any of the Items, except pre-existing materials of the
          Consultant, either during the Term or after termination of this
          Agreement.

7. Warranties. The Consultant represents and warrants as follows:

     (a)  That it is under no obligation or restriction, nor will it assume any
          such obligation or restriction, which would in any way interfere or be
          inconsistent with, or present a conflict of interest concerning the
          services to be furnished by it under this Agreement.

     (b)  That all items delivered to the Principal pursuant to this Agreement
          are original and that no portion of such items, or their use or
          distribution, violates or is protected by any copyright or similar
          right of any third party.

     (c)  That any information disclosed by the Consultant to the Principal is
          not confidential and/or proprietary to the Consultant and/or any third
          party.

8.   Trade Marks and Trade Names. Notwithstanding any other provision of this
     Agreement, the Consultant shall have no right to use the Trade Marks or
     Trade Names of the Principal or to refer to this Agreement or the Services,
     directly or indirectly, in connection with any product, service, promotion
     or publication without the prior written approval of the Principal.

9.   Notices. All notices, requests, demands or other communications required by
     this Agreement or desired to be given or made by either of the parties to
     the other hereto shall be given or made by personal delivery or by mailing
     the same in a sealed envelope, postage prepaid, registered mail, return
     receipt requested, and addressed to the parties at their respective
     addresses set forth above or to such other address as may, from time to
     time, be designated by notice given in the manner provided in this
     paragraph. Any notice or communication mailed as aforesaid shall be deemed
     to have been given and received on the third business day next following
     the date of its mailing. Any notice or writing delivered to a party hereto
     shall be deemed to have it been given and received on the day it is
     delivered, provided that if such day is not a business day, then the notice
     or communication shall be deemed to have been given and received on the
     business day next following such date.

10.  Compliance With Laws. The Consultant agrees that it will comply with all
     applicable laws, ordinances, regulations and codes in the performance of
     its obligations under this Agreement, including the procurement of permits
     and certificates where required. The Consultant further agrees to hold
     harmless and indemnify the Principal against any loss or damage to include
     reasonable solicitor's fees that may be sustained by reason of the failure
     of the Consultant or its employees, agents or subcontractors to comply with
     such laws, ordinances, regulations and codes.

                                        4

<PAGE>

11.  Entire Agreement. This Agreement sets forth the entire Agreement between
     the parties hereto in connection with the subject matter hereof. No
     alteration, amendment or qualification of this Agreement shall be valid
     unless it is in writing and is executed by both of the parties hereto.

12.  Severability. If any paragraph of this Agreement or any portion thereof is
     determined to be unenforceable or invalid by the decision of any court by
     competent jurisdiction, which determination is not appealed or appealable,
     for any reason whatsoever, such unenforceability or invalidity shall not
     invalidate the whole Agreement, but the Agreement shall be construed as if
     it did not contain the particular provision held to be invalid and the
     rights and obligations of the parties shall be construed and enforced
     accordingly.

13.  Further Assurances. The parties hereto covenant and agree that each shall
     and will, upon reasonable request of the other, make, do, execute or cause
     to be made, done or executed, all such further and other lawful acts,
     deeds, things, devices and assurances whatsoever for the better or more
     perfect and absolute performance of the terms and conditions of the this
     Agreement.

14.  Successors and Assigns. The Consultant shall not assign this Agreement or
     any interest herein or subcontract the performance of any Services without
     the prior written consent of the Principal. This Agreement may be assigned
     by the Principal without the Consultant's consent and the Assignee shall
     have the rights and obligations of the Principal. This Agreement shall
     enure to the benefit of and be binding on the heirs, executors,
     administrators, successors and permitted assigns of the parties hereto.

15.  Governing Law. This Agreement shall be governed by and construed in
     accordance with the laws of the State of Florida.

16.  Relationship. The Consultant shall perform the Services as an independent
     contractor. Nothing contained in this Agreement shall be deemed to create
     any association, partnership, joint venture, or relationship of principal
     and agent or employer and employee between the parties hereto or to provide
     either party with the right, power or authority, whether express or
     implied, to create any such duty or obligation on behalf of the other
     party. The Consultant also agrees that it will not hold itself out as an
     affiliate of or partner, joint venturer, co-principal or co-employer with
     the Principal, by reason of the Agreement and that the Consultant will not
     knowingly permit any of its employees, agents or representatives to hold
     themselves out as, or claim to be, officers or employees of the Principal
     by reason of the Agreement. In the event that the Principal is adjudicated
     to be a partner, joint venturer, co-principal or co-employer of or with the
     Consultant, the C888onsultant shall indemnify and hold harmless the
     Principal from and against any and all claims for loss, liability or
     damages arising therefrom.

17.  Construction. In this Agreement, except as otherwise expressly provided ,
     all words and personal pronouns relating thereto shall be read and
     construed as the number and gender of the party or parties referred to in
     each case require and the verb shall be read and construed as agreeing with
     the required word and pronoun.

18.  Headings. The division of this Agreement into paragraphs and the use of
     headings is for convenience of reference only and shall not modify or
     affect the interpretation or construction of this Agreement or any of its
     provisions.


                                        5

<PAGE>

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

                                        Veitia and Associates, Inc.
                                        By:/s/ Diego J. Veitia
                                        Title:CEO

                                        International Assets Holding Corporation

                                        By:/s/ Edward Cofrancesco
                                        Title:COO

                                        6