1. download xbc XBConnect
2. Make sure your computer running xbc and your xbox are connected to the same router
3. Pop in h1 > system link > chose your player > wait in the screen that says Looking for game
4. Back to the computer, install xbc
5. make account for xbc and login
6. Click on h1 on the left side then you should see a list of severs in the center
7. List games according to PING you really only want to play games with pings <70
8. Double click a game and a new window should come up and list all the people in he game. At this point if the game is open your Looking for Game window should change to the game. If not, just try another game, not all games work
8b. a window also might pop up saying trying to locate console, should only take a second. MAKE SURE halo is at the Looking for Game window or this step will fail
9. First time around it will say something like it needs to locate your console, this should only take a few seconds. Just make sure your xbox is at the Looking for Game window or will not work.
9. If none of the severs work you can always Host your on games

Hosting
1. Click Host in the lower left corner
2. Now on your xbox make your own game and just wait for players

oh yeah, make sure your firewall is off.