Are you referring to the EXPADMIN id used to get into Contract Manager Administration?
If so, you have 2 options:
1) reload a fresh EXPADMIN database and lose all of your user id's, security, attachment locations......
2) Have a DBA connect directly to the EXPADMIN data and clear the password field for the EXPADMIN ID in the USER_ACCESS table. The field is encrypted so they won't be able to just type a new password in there. Then login to Contract Manager Adminstration as EXPADMIN and reset the password for it.