Have a computer that came w/ XP Home. Bought an XP Pro Upgrade CD. I want to redo the computer, so, do I wipe it out, install XP Home from the eMachines discs. Then re-upgrade. And if I do so I won't have problems w/ the "key" thing on the XP Pro upgrade will I? It's already been registered, activated... can it be redone?? What should i Do? Also on a side note. If one changed the setupp.ini file's Pid from Retail to Volume/Corp. Lic. version, will that avoid this problem and allow a fresh install from scratch?? Thanks!