Exhibit 2 Letter Agreement - re: Acquisition of Aduddell Roofing

                                      ZENEX

                                 COMMUNICATIONS

                                      INC.

                                                                  August 2, 2002

Hand Delivered

Aduddell Roofing & Sheet Metal, Inc.
14220 S. Meridian Ave.
Oklahoma City, Oklahoma 73173


     Re: Letter Agreement

Gentlemen:

     On behalf of Zenex  International,  Inc. ("Zenex" or "We"), I am pleased to
confirm our  acquisition  of Aduddell  Roofing & Sheet  Metal,  Inc.  ("Aduddell
Roofing" or "You").  This Letter Agreement is subject to the following terms and
conditions:

     1.  Description of  Transaction.  The  acquisition  will be structured as a
reverse  triangular  merger,  in which  Aduddell  Roofing will be the  surviving
corporation  in a merger with a wholly owned  subsidiary  of Zenex.  Immediately
before the merger, Aduddell Roofing will effect a split-off of its non-operating
assets  and  liabilities  into  a new  corporation.  We  will  not  acquire  the
non-operating assets and liabilities of Aduddell Roofing.

     As consideration for the acquisition,  Zenex will issue 10.0 million shares
of its common stock and options to acquire  30.0 million  shares of common stock
at an exercise price of $0.04 per share.  We anticipate  that both the split-off
and the merger will qualify for tax-free  treatment  under the Internal  Revenue
Code.  The  acquisition  will be  effected  by a mutually  agreeable  definitive
agreement  containing  customary  representations  and  warranties  by  Aduddell
Roofing and its shareholder,  customary covenants on behalf of both parties, and
a  restructuring  agreement  addressing  the  separation  of Aduddell  Roofing's
operating and non-operating assets in the split-off.

     2. Expenses.  You and we will each pay our respective  expenses incident to
this  Letter   Agreement,   the  definitive   agreement  and  the   transactions
contemplated hereby and thereby.

     3. Disclosure. You agree that we will issue a press release announcing this
Letter  Agreement.  You and we agree to consult with one another  regarding  the
timing and content of any  subsequent  releases,  provided  that we may disclose
this Letter  Agreement,  the definitive  agreement and other material aspects of
the acquisition in a Form 8-K and amendments thereto.

     4. Broker's Fees.  Except for our agreement  with Benchmark  Global Capital
Group,  Inc.,  you and we have  represented  to each  other  than no  brokers or
finders  have been  employed  who would be entitled to Aduddell  Roofing & Sheet
Metal,  Inc.  August  2,  2002  Page  2 a  fee  by  reason  of  the  transaction
contemplated by this Letter Agreement.

     5.   Miscellaneous.   This  Letter  Agreement  shall  be  governed  by  the
substantive  laws of the State of  Oklahoma  without  regard to  conflict of law
principles.  This Letter  Agreement  constitutes  the entire  understanding  and
agreement  between the parties hereto and their  affiliates  with respect to its
subject  matter  and  supersedes  all  prior  or   contemporaneous   agreements,
representations,  warranties and understandings of such parties (whether oral or
written).  No promise,  inducement,  representation or agreement,  other than as
expressly  set forth  herein,  has been made to or by the parties  hereto.  This
Letter Agreement may be amended only by written agreement, signed by the parties
to be bound by the amendment.  Evidence shall be  inadmissible to show agreement
by and between such parties to any term or condition  contrary to or in addition
to the terms and  conditions  contained  in this letter.  This Letter  Agreement
shall be construed according to its fair meaning and not strictly for or against
either party.

     If these terms and conditions are acceptable to you,  please so indicate by
signing and returning copy of this letter to us.

     We look  forward to hearing  from you and to moving  forward as promptly as
possible to complete this acquisition.

                                            Sincerely yours,

                                            /s/ Ron Carte
                                            -------------------
                                            Ron Carte, President

     Duly executed and agreed on August 7, 2002.

                                            Aduddell Roofing & Sheet Metal, Inc.


                                            By: /s/Tim Aduddell
                                            -----------------------------------
                                            Tim Aduddell, Chairman of the Board