Hi. I have recently try out activating Windows XP Home Edition SP3 with the OEM key bundle with my system (HPQ). I had use the key and activate the Windows XP on the real machine (6 month ago). Now i use the same key on VMware 7.0 and try activating. Now it even activates. The key is mark as OEM System builder. Possible that WAT change the activation settings at Microsoft activation server. I suspect that they only block leak keys. Those key mark as Genuine will just activate itself, even if it is OEM system builder which is been use before. I suspect HWID is also removed form server. What been tested: OEM system builder keys activation pass. OEM-SLP keys will mark as unauthorized keys. Blacklisted keys will mark as invalid keys. Give any suggestion here. Thank-You.