OKAY, I'm hoping some of you computer whizzes out there can give me some solid advice here. Mr. Foxfyre and I each have an aging PC both custom built at the computer store - both over 5 years old now - both have Windows XP. I have software that will scrub - i.e. erase - everything off our hard drives. If I do that can I then install Windows 7? And will that make these computers run like new?