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                                                                EXHIBIT 10.66(b)

                FIRST AMENDMENT TO EXECUTIVE EMPLOYMENT AGREEMENT

         This Agreement, entered into on this 21st of December, 1998, and made
effective as of December 21, 1998, by and between ENRON OIL & GAS COMPANY, a
Delaware corporation ("Company") having its headquarters at 1400 Smith Street,
Houston, Texas 77002, and BARRY HUNSAKER, JR. ("Employee"), an individual
residing at 3730 Wickersham, Houston, Texas 77027, is an amendment to that
certain Executive Employment Agreement between the Company and Employee entered
into the 7th day of October, 1998, and made effective as of September 1, 1998
(the "Employment Agreement").

         WHEREAS, the parties desire to amend the Employment Agreement as
provided herein;

         NOW, THEREFORE, in consideration thereof and of the mutual covenants
contained herein, the parties agree as follows:


         1.       Article 3, Section 3.5 to the Employment Agreement is hereby
                  deleted in its entirety and the following is inserted in its
                  entirety:

                  "Upon an Involuntary Termination of the employment
                  relationship be either Employer or Employee prior to the
                  expiration of the Term, Employee shall be entitled, in
                  consideration of Employee's continuing obligations hereunder
                  after such termination (including, without limitation,
                  Employee's non-competition obligations), to receive the
                  greater of a) 12 months of the then current Monthly Base
                  Salary or b) the then current Monthly Base Salary as if
                  Employee's employment (which shall cease on the date of such
                  Involuntary Termination) had continued for the full Term of
                  this Agreement. If such Involuntary Termination occurs within
                  two (2) years after a Change of Control, as defined in
                  Employer's Change of Control Severance Plan, Employee shall
                  receive a minimum of twenty-four (24) months of the then
                  current Monthly Base Salary. Further, in the event of
                  Involuntary Termination, if Employee's eligiblity for COBRA
                  coverage expires, Employer shall provide to Employee the cost
                  difference between COBRA coverage and a personal
                  medical/dental policy paid by Employee for the six (6) months
                  following the COBRA coverage or Employee's gainful employment,
                  whichever comes first. Employee shall not be under any duty or
                  obligation to seek or accept other employment following
                  Involuntary Termination and the amount due Employee hereunder
                  shall not be reduced or suspended if Employee accepts
                  subsequent employment. Employee's rights under this Section
                  3.5






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                  are Employee's sole and exclusive rights against Employer,
                  Enron, or their affiliates, and Employer's sole and exclusive
                  liability to Employee under this Agreement, in contract, tort,
                  or otherwise, for any Involuntary Termination of the
                  employment relationship. Employee covenants not to sue or
                  lodge any claim, demand or cause of action against Employer
                  for any sums for Involuntary Termination other than those sums
                  specified in this Section 3.5. If Employee breaches this
                  covenant, Employer shall be entitled to recover from Employee
                  all sums expended by Employer (including costs and attorneys
                  fees) in connection with such suit, claim, demand or cause of
                  action."

         This Amendment is a First Amendment to the Employment Agreement, and
the parties agree that all other terms, conditions and stipulations contained in
the Employment Agreement, and any amendments thereto, shall remain in full force
and effect and without any change or modification, except as provided herein.


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

                                    ENRON OIL & GAS COMPANY



                                    By: /s/ PATRICIA EDWARDS
                                       -----------------------------------------
                                    Name: Patricia Edwards
                                    Title: V.P. Human Resources & Administration
                                    This 21st day of December, 1998


                                    BARRY HUNSAKER, JR.


                                    /s/ BARRY HUNSAKER, JR.
                                    --------------------------------------------
                                    This 21st day of December, 1998








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