So I have the actual Windows XP Home Edition disc. I've already installed it but was wondering if I let my friend use the disc but use a different key since he doesnt have the disc. Is this possible?
As long as you have an OEM disc, and he has an OEM serial, or you have a Retail disc and he has a Retail serial (disc/key have to be the same type), then it will work. I've done this at work several times when a customer has forgotten their OS disc.