<PAGE>

                                                                     EXHIBIT 4.8

                     IRREVOCABLE TRANSFER AGENT INSTRUCTIONS


May 19, 2004

Continental Stock Transfer and Trust Company
17 Battery Place
New York, NY 10004


Attention:

         RE:      OXFORD VENTURES INC.

Ladies and Gentlemen:


         Reference is made to that certain Securities Purchase Agreement (the
"SECURITIES PURCHASE AGREEMENT"), dated the date hereof, by and between Oxford
Ventures Inc., a Nevada corporation (the "COMPANY"), and the Buyer set forth on
Schedule I attached thereto (collectively the "BUYER"), pursuant to which the
Company shall sell to the Buyer up to Five Hundred Thousand Dollars ($500,000)
of the Company's secured convertible debentures (the "Convertible Debentures"),
which shall be convertible into shares of the Company's common stock, par value
$.001 per share (the "COMMON STOCK"). The shares of Common Stock underlying the
Convertible Debentures to be converted plus interest which may be converted into
Common Stock and any Liquidated Damages, which may be converted into Common
Stock thereunder are referred to herein as the "CONVERSION SHARES." The Company
has reserved for registration under the Securities Act of 1933, as amended, up
to 52,083,333 Conversion Shares to be issued upon conversion of the Convertible
Debentures. This letter shall serve as our irrevocable authorization and
direction to you (provided that you are the transfer agent of the Company at
such time) to issue the Conversion Shares in shares of the Company's Common
Stock, in the event the Buyer has elected to have the interest of the
Convertible Debentures, pursuant to Section 1.06 of the Convertible Debentures,
paid in Common Stock (the "INTEREST SHARES"), or the Buyer has elected to have
Liquidated Damages (the "LIQUIDATED DAMAGES SHARES"), pursuant to Section 2(c)
of the Investor Registration Rights Agreement dated the date hereof paid in
Common Stock. to the Buyer from time to time upon surrender to you of a properly
completed and duly executed Conversion Notice, in the form attached hereto as
EXHIBIT I, delivered on behalf of the Company by David Gonzalez, Esq.


         Specifically, upon receipt by the Company or David Gonzalez, Esq. of a
copy of a Conversion Notice, David Gonzalez, Esq., on behalf of the Company,
shall as soon as practicable, but in no event later than one (1) Trading Day (as
defined below) after receipt of such Conversion Notice, send, via facsimile, a
Conversion Notice, which shall constitute an irrevocable instruction to you to
process such Conversion Notice in accordance with the terms of these

<PAGE>

instructions. Upon your receipt of a copy of the executed Conversion Notice, you
shall use your best efforts to, within three (3) Trading Days following the date
of receipt of the Conversion Notice, (A) issue and deliver to a common carrier
for overnight delivery to the address as specified in the Conversion Notice, a
certificate, registered in the name of the Buyer or its designee, for the number
of shares of Common Stock to which the Buyer shall be entitled as set forth in
the Conversion Notice or (B) provided you are participating in The Depository
Trust Company ("DTC") Fast Automated Securities Transfer Program, upon the
request of the Buyer, credit such aggregate number of shares of Common Stock to
which the Buyer shall be entitled to the Buyer's or its designee's balance
account with DTC through its Deposit Withdrawal At Custodian ("DWAC") system
provided the Buyer causes its bank or broker to initiate the DWAC transaction.
("TRADING DAY" shall mean any day on which the Nasdaq Market is open for
customary trading.)


         The Company hereby confirms to you and the Buyer that certificates
representing the Conversion Shares, the Interest Shares, and/or the Liquidated
Damages Shares shall not bear any legend restricting transfer of the Conversion
Shares thereby and should not be subject to any stop-transfer restrictions and
shall otherwise be freely transferable on the books and records of the Company
provided that the Company counsel delivers (i) the Notice of Effectiveness set
forth in EXHIBIT II attached hereto and (ii) an opinion of counsel in the form
set forth in EXHIBIT III attached hereto, and that if the Conversion Shares, the
Interest Shares, and/or the Liquidated Damages Shares are not registered for
sale under the Securities Act of 1933, as amended, then the certificates for the
Conversion Shares shall bear the following legend:

         "THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN
         REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR APPLICABLE
         STATE SECURITIES LAWS. THE SECURITIES HAVE BEEN ACQUIRED FOR INVESTMENT
         AND MAY NOT BE OFFERED FOR SALE, SOLD, TRANSFERRED OR ASSIGNED IN THE
         ABSENCE OF AN EFFECTIVE REGISTRATION STATEMENT FOR THE SECURITIES UNDER
         THE SECURITIES ACT OF 1933, AS AMENDED, OR APPLICABLE STATE SECURITIES
         LAWS, OR AN OPINION OF COUNSEL, IN A FORM REASONABLY ACCEPTABLE TO THE
         COMPANY, THAT REGISTRATION IS NOT REQUIRED UNDER SAID ACT OR APPLICABLE
         STATE SECURITIES LAWS OR UNLESS SOLD PURSUANT TO RULE 144 UNDER SAID
         ACT."


         The Company hereby confirms and Continental Stock Transfer and Trust
Company ("Continental Stock Transfer") acknowledges that in the event Counsel to
the Company does not issue an opinion of counsel as required to issue the
Conversion Shares free of legend the Company authorizes and instructs
Continental Stock Transfer to accept an opinion of Counsel from Butler Gonzalez
LLP.


         The Company hereby confirms to you and the Buyer that no instructions
other than as contemplated herein will be given to you by the Company with
respect to the Conversion Shares. Such Conversion Shares shall remain in reserve
with Continental Stock Transfer until the Company and the Buyer mutually provide
Continental Stock Transfer instructions that the shares of Common Stock may be
removed from escrow. The Company hereby agrees that it shall not replace
Continental Stock Transfer as the Company's transfer agent without the prior
written consent of the Buyer.

                                       2
<PAGE>


         During the term of this Agreement Continental Stock Transfer shall not
resign as transfer agent for the Company without providing five business days
prior notice to the Buyer.


         The Company and Continental Stock Transfer hereby acknowledge and
confirm that complying with the terms of this Agreement does not and shall not
prohibit Continental Stock Transfer from satisfying any and all fiduciary
responsibilities and duties it may owe to the Company.


         Each party hereto specifically acknowledges that the Buyer is relying
on the representations and covenants made by the Company and Continental Stock
Transfer hereunder and are a material inducement to the Buyer purchasing
convertible debentures under the Securities Purchase Agreement. Each party
further acknowledges that without such representations and covenants of the
Company and Continental Stock Transfer made hereunder, the Buyer would not enter
into the Securities Purchase Agreement and purchase convertible debentures
pursuant thereto.


         Each party hereto specifically acknowledges and agrees that in the
event of a breach or threatened breach by a party hereto of any provision
hereof, the Buyer will be irreparably damaged and that damages at law would be
an inadequate remedy if these Irrevocable Transfer Agent Instructions were not
specifically enforced. Therefore, in the event of a breach or threatened breach
by a party hereto, including, without limitation, the attempted termination of
the agency relationship created by this instrument, the Buyer shall be entitled,
in addition to all other rights or remedies, to an injunction restraining such
breach, without being required to show any actual damage or to post any bond or
other security, and/or to a decree for specific performance of the provisions of
these Irrevocable Transfer Agent Instructions.

         Continental Stock Transfer may consult with counsel as to its rights
and duties hereunder. In the event that Continental Stock Transfer shall be
uncertain as to its duties or rights hereunder, it may commence as interpleader
action in any court of competent jurisdiction to seek an adjudication of the
rights of the Company and the Investor.

                                    * * * * *



                                       3
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         IN WITNESS WHEREOF, the parties have caused this letter agreement
regarding Irrevocable Transfer Agent Instructions to be duly executed and
delivered as of the date first written above.

                                                      COMPANY:

                                                      OXFORD VENTURES INC.

                                                      By: /S/ DANIEL K. LEONARD
                                                          ----------------------
                                                      Name:   Daniel K. Leonard
                                                      Title:  President


                                                       /S/ DAVID GONZALEZ
                                                       -------------------------
                                                       David Gonzalez, Esq.




CONTINENTAL STOCK TRANSFER AND TRUST COMPANY.

By: /S/ ROGER BERNHAMMER
    ------------------------
Name: ROGER BERNHAMMER
    ------------------------
Title: VICE PRESIDENT
    ------------------------



                                       4
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<TABLE>


                                                       SCHEDULE I
                                                       ----------

                                                   SCHEDULE OF BUYERS
                                                   ------------------

                                                                                        ADDRESS/FACSIMILE
NAME                                    SIGNATURE                                       NUMBER OF BUYER
----                                    ---------                                       ---------------
<S>                                     <C>                                             <C>
Cornell Capital Partners,  LP           By:      Yorkville Advisors, LLC                101 Hudson Street - Suite 3700
                                        Its:     General Partner                        Jersey City, NJ  07303
                                                                                        Facsimile:        (201) 985-8266

                                        By: /S/ MARK A. ANGELO
                                            --------------------------
                                        Name:   Mark A. Angelo
                                        Its:    Portfolio Manager

</TABLE>



                                  SCHEDULE I-1

<PAGE>


                                    EXHIBIT I
                                    ---------


                   TO IRREVOCABLE TRANSFER AGENT INSTRUCTIONS
                   ------------------------------------------


                            FORM OF CONVERSION NOTICE
                            -------------------------


         Reference is made to the Securities Purchase Agreement (the "SECURITIES
PURCHASE AGREEMENT") between Oxford Ventures Inc., (the "COMPANY"), and Cornell
Capital Partners, LP, dated May ____ 2004. In accordance with and pursuant to
the Securities Purchase Agreement, the undersigned hereby elects to convert
convertible debentures into shares of common stock, par value $.001 per share
(the "COMMON STOCK"), of the Company for the amount indicated below as of the
date specified below.

Conversion Date:                                      __________________________

Amount to be converted:                               $_________________________

Conversion Price:                                     $_________________________

Shares of Common Stock Issuable:                      __________________________

Amount of Debenture unconverted:                      $_________________________

Amount of Interest Converted:                         $_________________________

Conversion Price of Interest:                         $_________________________

Shares of Common Stock Issuable:                      __________________________

Amount of Liquidated Damages:                         $_________________________

Conversion Price of Liquidated Damages:               $_________________________

Shares of Common Stock Issuable:                      __________________________

Total Number of shares of Common Stock to be issued:  __________________________



                                   EXHIBIT I-1
<PAGE>


Please issue the shares of Common Stock in the following name and to the
following address:

Issue to:                                              _________________________

Authorized Signature:                                  _________________________

Name:                                                  _________________________

Title:                                                 _________________________

Phone #:                                               _________________________

Broker DTC Participant Code:                           _________________________

Account Number*:                                       _________________________



     * NOTE THAT RECEIVING BROKER MUST INITIATE TRANSACTION ON DWAC SYSTEM.



                                       2

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                                   EXHIBIT II
                                   ----------


                   TO IRREVOCABLE TRANSFER AGENT INSTRUCTIONS
                   ------------------------------------------


                         FORM OF NOTICE OF EFFECTIVENESS
                         -------------------------------
                            OF REGISTRATION STATEMENT
                            -------------------------


_________, 2004



Attention:

         RE:      OXFORD VENTURES INC.

Ladies and Gentlemen:

         We are counsel to Oxford Ventures Inc, a Nevada corporation (the
"COMPANY"), and have represented the Company in connection with that certain
Securities Purchase Agreement, dated as of May __, 2004 (the "SECURITIES
PURCHASE AGREEMENT"), entered into by and among the Company and the Buyers set
forth on Schedule I attached thereto (collectively the "BUYER") pursuant to
which the Company has agreed to sell to the Buyer up to Five Hundred Thousand
Dollars ($500,000) of secured convertible debentures, which shall be convertible
into shares (the "CONVERSION SHARES") of the Company's common stock, par value
$.001 per share (the "COMMON STOCK"), in accordance with the terms of the
Securities Purchase Agreement. Pursuant to the Securities Purchase Agreement,
the Company also has entered into a Registration Rights Agreement, dated as of
May __, 2004, with the Buyer (the "INVESTOR REGISTRATION RIGHTS AGREEMENT")
pursuant to which the Company agreed, among other things, to register the
Conversion Shares under the Securities Act of 1933, as amended (the "1933 ACT").
In connection with the Company's obligations under the Securities Purchase
Agreement and the Registration Rights Agreement, on _______, 2004, the Company
filed a Registration Statement (File No. ___-_________) (the "REGISTRATION
STATEMENT") with the Securities and Exchange Commission (the "SEC") relating to
the sale of the Conversion Shares.

         In connection with the foregoing, we advise you that a member of the
SEC's staff has advised us by telephone that the SEC has entered an order
declaring the Registration Statement effective under the 1933 Act at ____ P.M.
on __________, 2004 and we have no knowledge, after telephonic inquiry of a
member of the SEC's staff, that any stop order suspending its effectiveness has
been issued or that any proceedings for that purpose are pending before, or
threatened by, the SEC and the Conversion Shares are available for sale under
the 1933 Act pursuant to the Registration Statement.


         The Buyer has confirmed it shall comply with all securities laws and
regulations applicable to it including applicable prospectus delivery
requirements upon sale of the Conversion Shares.


                                                     Very truly yours,





                                                     By:
                                                        ------------------------


                                  EXHIBIT II-1

<PAGE>


                                   EXHIBIT III
                                   -----------


                   TO IRREVOCABLE TRANSFER AGENT INSTRUCTIONS
                   ------------------------------------------


                                 FORM OF OPINION
                                 ---------------


________________ 2004

VIA FACSIMILE AND REGULAR MAIL
------------------------------


Attention:        _______

         RE:      OXFORD VENTURES INC.

Ladies and Gentlemen:


         We have acted as special counsel to Oxford Ventures Inc (the
"COMPANY"), in connection with the registration of ___________shares (the
"SHARES") of its common stock with the Securities and Exchange Commission (the
"SEC"). We have not acted as your counsel. This opinion is given at the request
and with the consent of the Company.


         In rendering this opinion we have relied on the accuracy of the
Company's Registration Statement on Form SB-2, as amended (the "REGISTRATION
STATEMENT"), filed by the Company with the SEC on _________ ___, 2004. The
Company filed the Registration Statement on behalf of certain selling
stockholders (the "SELLING STOCKHOLDERS"). This opinion relates SOLELY to the
Selling Shareholders listed on EXHIBIT "A" hereto and number of Shares set forth
opposite such Selling Stockholders' names. The SEC declared the Registration
Statement effective on __________ ___, 2004.


         We understand that the Selling Stockholders acquired the Shares in a
private offering exempt from registration under the Securities Act of 1933, as
amended. Information regarding the Shares to be sold by the Selling Shareholders
is contained under the heading "Selling Stockholders" in the Registration
Statement, which information is incorporated herein by reference. This opinion
does not relate to the issuance of the Shares to the Selling Stockholders. The
opinions set forth herein relate solely to the sale or transfer by the Selling
Stockholders pursuant to the Registration Statement under the Federal laws of
the United States of America. We do not express any opinion concerning any law
of any state or other jurisdiction.


         In rendering this opinion we have relied upon the accuracy of the
foregoing statements.


         Based on the foregoing, it is our opinion that the Shares have been
registered with the Securities and Exchange Commission under the Securities Act
of 1933, as amended, and that ___________ may remove the restrictive legends
contained on the Shares. This opinion relates SOLELY to the number of Shares set
forth opposite the Selling Stockholders listed on EXHIBIT "A" hereto.



                                  EXHIBIT III-1
<PAGE>

         This opinion is furnished to you specifically in connection with the
issuance of the Shares, and solely for your information and benefit. This letter
may not be relied upon by you in any other connection, and it may not be relied
upon by any other person or entity for any purpose without our prior written
consent. This opinion may not be assigned, quoted or used without our prior
written consent. The opinions set forth herein are rendered as of the date
hereof and we will not supplement this opinion with respect to changes in the
law or factual matters subsequent to the date hereof.




Very truly yours,






                                  EXHIBIT III-2

<PAGE>


                                   EXHIBIT "A"
                                   -----------


                         (LIST OF SELLING STOCKHOLDERS)
                         ------------------------------


NAME:                                                NO. OF SHARES:
---------------------------------------------------- ---------------------------









                                   EXHIBIT A-1