Oh, I forgot to mention. Do to it, you have to do a clean install of XP on to a hard drive, which seems out of the question for you. Seriously, I would google it. It has been a long time since I looked into, and after finding the only guide on how to do it, I gave up on that route.
PS, this goes beyond "wouldn't recommend it to a friend." This is "wouldn't do it unless you paid me" territory, but obviously, you seriously need a way to get your files back.