this is just to let anyone know that if you want to burn halo for pc.... clone cd works. but you don't really need to because u don't need the cd to play the single player game. but if you want a back up copy then clonecd works. i downloaded the halo patch and then there were problems. it wanted the cd for single player and it wouldn't recognize my burned copy as the right cd. so if u want to play single player halo. just don't get the update. if u want to play multi player, ur gonna have to purchase a legal copy of the game.