A client wants a 4-5 year old Dell computer wiped and a reinstall of the operating system. I don't have any windows XP discs on me at the moment, and I'm assuming that's what the PCs were shipped with back 4-5 years ago. I want to start downloading the correct operating system now, so all I have to do is install it when it arrives in a few hours. Should I look for windows XP home edition, or professional edition, or some other edition? Any and all suggestions will be greatly appreciated.