all you need to do to change your game from a LAN to internet is add

sv_public true

to your init file

ok i just got my halo ds working and i can jion from the same comp. the only problem is when i go into the game when the ds is running the color is all screwed up. i can jion and everything but i just cant see what im doing. the color on the menu is messed up too and as soon as i exit the ds it goes...