The oem Pro or Home are Bios locked for the big pc companys and the small oems like myself have to still active xp.
If I sold 10,000 pc a year then MS would let me Bios lock the install by changing a bios check file supplyed to me by MS after I supply them with my own bios for each system type I build.
If you can rip a bios and remove the manufacture string from a say dell the put the string into your bios it would not require activation if you loaded the dell oem.
Apples
