February __, 2001 William E. Nixon 22 Anacapri Laguna Niguel, CA 92677 Re: Extension of Mutually-Agreed Severance Date Dear Bill: This is to confirm our agreement that we have mutually-agreed that the "Severance Date" (as defined in the January 18,...

                                   CORE, INC.
                             00000 XXX XXXXXX XXXXXX
                                   XXXXX 0000
                            XXXXXX, XXXXXXXXXX 00000
                            TELEPHONE: (000) 000-0000


                                           February __, 0000

Xxxxxxx X. Xxxxx
00 Xxxxxxxx
Xxxxxx Xxxxxx, XX 00000

         Re:      Extension of Mutually-Agreed Severance Date

Dear Xxxx:

         This is to confirm our agreement that we have mutually-agreed that the
"Severance Date" (as defined in the January 18, 2001 letter agreement between
you and CORE, INC.) will be changed from March 1, 2001 to April 1, 2001.

         Please sign this letter agreement in the space provided below to
evidence your acceptance and agreement with the foregoing.

                                        Sincerely,

                                        CORE, INC.


                                        By: /s/ Xxxxxx X. Xxxxxxxxx XX
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                                            Xxxxxx X. Xxxxxxxxx XX
                                            Chairman and Chief Executive Officer

Accepted and agreed to.


/s/ Xxxxxxx X. Xxxxx
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Xxxxxxx X. Xxxxx