needed.? I found a P2 computer with Windows XP on it . But I can't get into it because it is locked by user password which I don't know. I booted up on my Windows XP disc (to reset the account and administrator details including a new password)but my serial numbers are deemed invalid. I don't know why because I have loaded this XP on other pc's. Does anybody know how to get the new 25 digit validation serial number which will then enable me to download the Win XP software and reset the password?