I tried installing the game Mafia and got an error saying I needed a current Indeo codec from this site. http://indeo.ligos.com. and they say they want $14.95 them I managed to get round it by doing a repair install with the original XP CD then upgrading to SP1 its a bit of dirty trick if you ask me all that hard work making a slipstreamed XP-SP1 CD for nothing GGGRRRRR !!!!!!!