How to change administrator password in xp even if you are logged as guest

Here's a trick on how to change admin password in windows xp even if u r logged as different user or guest.

1. go to start and click run
2. type cmd
3. a black and white screen will pop up(similar to DOS)
4. type net users (u gonna see users accounts)
5. choose a username u wanna change password of
6. then type net users username * and click enter
7. it gonna ask u for password
8. type a password and confirm it