I bought Halo: Combat Evolved. I want to be able to burn it for personal use. I have 4 computers on my network and want to be able to play Halo throgh the network on each PC, at the same time. Using Nero I created 3 disk images. However, when I tried to play on the network I could start a game on any one of the 4 computers, but when I tried to join the game from another computer, it told me I had an invalid CD key. Is it possible to make a burn that will work with the computers through my LAN?