You should probably boot to single user mode to change the PW:
- Reboot
- During the lilo boot loading sequence hit any key to interrupte
- You should have a cursor at this point
- Type.......... linux single
- type /usr/sbin/mount -a
- type passwd
- enter a new password
- type /usr/sbin/shutdown -r now
You shoudl be gtg.
Haven't done this in a while and this is off the top of my head. Hope this works. If not, go to google and search for "linux single user mode"
Cheers!