So, about a year ago I downloaded Windows 7 from a site (Not sure if I'm allowed to name), but the poster had around 500 posts saying thank you etc. I used it for around a year, until my Itunes account info was stolen. Nothing else, just that. I'm paranoid because there could be a rootkit in the bootloader or the kernal. I'm using XP at the moment, and I need to reformat because my friend decided to keylog me as a prank and I cannot get rid of it, but I lost my XP disk. Should I just use this old disk? My internet is slower than molasses so dling a new OS isn't a good option.