I currently have sp2 installed in my C: drive but when I put in the XP Pro CD, it says that I already have the newest version, and it doesnt even let me decide what drive I want to put it on. I want to put it on the E: drive. The slaved drive belongs to my friend, we were transferring all his songs over my computer, then formatting his, then transferring the songs back over. But, I cant re-install windows on his. What should I do?