This how to video shows you how to hack or change a windows xp password without the user knowing. You can change the password of a user on Windows XP and then because you changed their password you will have access to their account.
How to Change or Hack Windows XP password video
This is an easy password hack, if you are using windows xp you can easily change users passwords. You can also gain access to accounts and change passwords by going into safe mode (just hit F8 at the right time during start up)