Wala! Try this.
Petter Nordahl-Hagen
has written a Windows NT/2000/XP/Vista offline password
editor:
http://home.eunet.no/pnordahl/ntpasswd/
This is a utility to
(re)set the password of any user that has a valid (local) account
on your Windows NT/2000/XP/2003/Vista system, by modifying the
encrypted password in the registry's SAM file.
You do not need to know
the old password to set a new one.
It works offline, that
is, you have to shutdown your computer and boot off a floppy disk
or CD. The boot-disk includes stuff to access NTFS partitions and
scripts to glue the whole thing together.
Works with syskey (no
need to turn it off, but you can if you have lost the
key)
Will detect and offer
to unlock locked or disabled out user accounts!
Caution:
If used on users that have EFS encrypted files, and the system is
XP or later service packs on W2K, all encrypted files for that user
will be UNREADABLE! and cannot be recovered unless you remember the
old password again!