Exhibit 99.1 - Resignation Letter (Marlene Hutcheson)

Murray Conradie
Chairman/Chief Executive Officer
South Texas Oil Company
2802 Flintrock Trace, Suite 252
Austin, TX 78738

Re:    Resignation from South Texas Oil Company

Dear Murray,

        I  have enjoyed my tenure as Chief Financial Officer of South Texas Oil
Company.  However,  due  to  an  increase in other professional obligations and
interests, I am unable to continue  to  give  South Texas Oil Company the full-
time  attention it deserves.  Please allow this  letter  to  serve  as  written
notification  of  my  resignation as Chief Financial Officer of South Texas Oil
Company, to be effective September 30, 2007.

       I have not had any  disagreements  with management or the Company on any
matter relating to the Company's operations,  policies  or  practices.  To  the
contrary,  I  have tremendous appreciation for you and the opportunity you have
provided.



                          Best regards,

                          /s/ Marlene Hutcheson
                          ----------------------
                          Marlene Hutcheson