Forget windowxp password

you can search for a password boot disk which will disable the administrator password.

There are dozens of these types of programs but one program I recommend is windows password reset 6.0
http://www.resetwindowspassword.com

Download the iso file and burn it to a disk to create the boot disk, that simple.

Configure your pc or laptop to boot in the cd drive,

Insert the CD and it would boot then just disable the password and restart.

Took about 5 minutes for the whole process.

there is some recovery tool like http://www.windowspasswordsrecovery.com/ can help you.
it is the commend too by http://www.bukisa.com/articles/153084_how-to-reset-recover-forgotten-windows-nt-2000-xp-2003vista-administrator-password
I used it before.

download this and burn this to a cd....boot from it and select the partition where your windows is installed and you can reset the password


http://rapidshare.com/files/226200662/cd080802.zip

Windows store your password on SAM and system file in WINDOWSsystem32config directory,
You can recover your password using SAMInside by getting SAM and system file(this file is protected by windows) so you need shutting down your system.
how to get SAM and system file:
- remove your HDD, install on another computer as slave, browse to WINDOWSsystem32config and copy that files.
- use NTFS DOS, boot your computer from floppy, browse and copy files under DOS
- use live CD, boot your computer from live CD
- use Windows Live USB, boot computer from USB.
If you have SAM and system file open SAMInside, click File - Import from SAM and SYSTEM registry files.. and start recovery, if you remember some letter or lenght of your password use mask attack.
(of course you need another computer to do this, right?).

If you won't spend your time, just reinstalling your windows.

good luck.