ok, i rebuilt again keeping game explorer and parental controls and i get the same error. also, when the game finishes installing it says error registering with game explorer. i know it's not the game cause i don't rebuild vista and it works fine under admin account without any messing. i create another account and set it up to play the game and i still get the same error and can't even install the game. what option do i need to leave intact to run the game with credentials for windows xp sp2? thanks much for the help