Archived from groups: microsoft.public.windowsxp.perform_maintain (More info?)
Have you tried resetting the password from the hidden Administrator account?
Boot tapping the F8 key as the BIOS information goes by. At the Windows Advanced Options
menu select Safe Mode. On the welcome screen select Administrator. This is the hidden
Administrator account (not intended for day to day use) and assuming a password was never
assigned to it click enter.
Account changes can be made from Control Panel, or:
From there go to Start - Run and type
then press enter. From there you can select any user account and Reset Passwords,
add/remove accounts or change account type.