What I want to know is how to check to see if it's Windows 7 compatible, and that it will run effectively on it. I'd use XP if I had an XP disc laying around but unfortunately I do not. She doesn't have her Vista discs or anything, so my only options are to either just wipe everything and go with Win7 or attempt (ouch) to clean it with things like Malwarebytes and whatever else I will need to clean it up (Yes, I know about the sticky thread for cleaning computers of virus/malware

Any input is greatly appreciated. Thanks a lot.