UNITED STATED
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549



                                  SCHEDULE 13G


                    Under the Securities Exchange Act of 1934
                                 Amendment No. 1


                          Vista Exploration Corporation
                          -----------------------------
                                (Name of Issuer)

                                  Common Stock
                                  -------------
                         (Title of Class of Securities)

                                   92835R 10 8
                                   -----------
                                 (CUSIP Number)

                               September 16, 2002
                               ------------------
                      (Date of Event which Requires Filing
                               of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

              [ ]    Rule 13d-1(b)

              [X]    Rule 13d-1(c)

              [ ]    Rule 13d-1(d)



The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that Section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).





1)   Names of Reporting Persons; I.R.S. Identification Nos. (entities only)

     Terrie L. Pham


2)   Check the Appropriate Box if a Member of a Group (See Instructions)

     (a)    [  ]
     (b)    [  ]


3)   SEC Use Only


4)   Citizenship or Place of Organization      USA


Number of               5)   Sole Voting Power                 0
Shares
Beneficially
Owned                   6)   Shared Voting Power               0
by Each
Reporting
Person                  7)   Sole Dispositive Power            0
With

                        8)   Shared Dispositive Power          0


9)   Aggregate Amount Beneficially Owned by Each Reporting Person      0


10)  Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See
     Instructions)


11)  Percent of Class Represented by Amount in Row (9)      0%


12)  Type of Reporting Persons (See Instructions)      IN





Item 1.

(a)  Name of issuer: Vista Exploration Corporation
(b)  Address of issuer's principal executive offices: 11952 Farley, Shawnee
     Mission, KS 66213

Item 2.

(a)  Name of Person Filing: Terrie L. Pham
(b)  Address of Principal Business Address: 16511 E. 27 Terrace, Independence,
     MO 64055
(c)  Citizenship: Unites States of America
(d)  Title of Class of Securities: Common Stock
(e)  CUSIP Number: 92835R 10 8

Item 4. Ownership.

(a)  Amount beneficially owned: 0
(b)  Percent of class: 0%
(c)  Number of shares as to which such person has:
     (i)  Sole power to vote or to direct the vote: 0
     (ii) Shared power to vote or to direct the vote: 0
     (iii) Sole power to dispose or to direct the disposition of: 0
     (iv) Shared power to dispose or to direct the disposition of: 0

Item 5. Ownership of Five Percent or Less of a Class:

     If this statement is being filed to report the fact that as of the date
hereof the reporting person has ceased to be the beneficial owner of more than
5% of the class of securities, check the following [X]

Item 6. Ownership of More than Five Percent on Behalf of Another Person:

     Not Applicable

Item 7. Identification and Classification of the Subsidiary Which Acquired the
        Security Being Reported on by the Parent Holding Company:

     Not Applicable

Item 8. Identification and Classification of Members of the Group:

     Not Applicable

Item 9. Notice of Dissolution of Group:

     Not Applicable

Item 10. Certification.

     By signing below I certify that, to the best of my knowledge and belief,
the securities referred to above were not acquired and are not held for the
purpose of or with the effect of changing or influencing the control of the
issuer of the securities and were not acquired and are not held in connection
with or as a participant in any transaction having that purpose or effect.





                                   SIGNATURES
                                   ----------

     After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this Statement on Schedule 13G is
true, complete and correct as of the date hereof.

Dated: September 16, 2002


                                             /s/ Terrie L. Pham
                                             ------------------
                                             Terrie L. Pham