Hello aspiderfreak,
Did you receive any type of recovery media for that computer? Since the sticker on the side says Windows XP Home, it is apparent that someone before you bought it installed a non-genuine copy of Windows on the machine. If you have the recovery media then back up any important data and use the recovery CD to install your genuine copy of Windows XP, if you do not have the recovery media I would suggest contacting Sony directly on how to obtain a recovery CD for your machine. Please let me know if you have any further questions or concerns.
Thank you,
Matt Prall, MS
WGA Forum Manager