Every time we try to start up a 2 game over Live, it takes forever for him just to be able to get in the room because it says that game is no longer available (even though it obviously is). When he finally gets in, a loading screen appears, and as soon as it finishes loading, we both hear a sound and it kicks us out. We've tried 20 times at the very least and this is getting really annoying. Is there a way around this problem?
You don't have the right ports opened. Before I configured my router I had problems constantly with every game(even so, CC still has more problems than most). After a few minutes of typing in my router OS my connection has been working like a champ.
If it's a linksys point your internet browser to 192.168.1.1
username and pw should be something like name:admin pw: (nothing) or admin/admin if you didn't change it. Click Applications and Gaming and start putting this crap in. You'll need to specify IP address which is the annoying part because if you have a DHCP setup the xbox IP can change so you may need to add multiple IPs with the forwards.