2.)Now what you have just done is told the computer to backup the command programand the screen saver file, then edits the settings so when the machine boots thescreen saver you will get an unprotected dos prompt with out logging into XP.
3.)Once this happens if you enter this command minus the quotes"net user password"
4.) If the Administrator Account is called Admin and you want the password blah enter this"net user Admin blah"and this changes the password on Admin's machine to blah and your in.
Note : Dont forget to copy the contents of temphack back into the system32 dir to cover tracks.