first you need 3 online players(no guest)the you need to figure out who is the connecton host(turn into forge mode look down then turn back to human/elite and if your still looking down then you are the connection host)after you know who it is everyone needs (except one person) needs to press A on leave game then when you are in the "are you sure?"place highlight leave game,then the connection host presses A on leave game,after the screen goes black ,if your screen still has the "are you sure"place then you are the second connection host"once you know that press A to leave the gamethen rejoin(the second and first connection host)and there should be a clone of the first connection host,hope it helped -roxas uchiha
you dont
By getting halo 3 odst ( two discs ) first disc halo 3 odst campaign and 2nd disc halo 3 mythic comes with all the halo 3 maps.
be the party leader in custom games...
There are always two hosts in every online game lobby of Halo 3. The first host is the party leader. The party leader is the person who decides the lobby that players are located in, the gametype they will be playing, the map they will be playing on, the playlist they will be playing in, or the film that they will be watching. The party leader also controls the game options, decides when to start games, can end games while they are in session, and even limit the party size or close it off to other players completely. Additionally, the party leader can boot players from the party. The status of party leader can be freely passed amongst any player in the party at any time, by the party leader of course. The second host is the connection host. Players are unable to choose who the connection host is, and most players will never know who the connection host is at any given time. The status of connection host is always passed to the player with the best connection at the time by the game itself.
When you boot up Halo 3 go to the main menu, then choose matchmaking, but make sure you have Xbox Live connection, and there you have it, online multiplayer.
It means you dont have a secure connection to the internet and halo 3 server can locate it. you need a better provider
Set your NAT type, to "open".
EDITING... From Tony: you have to be 2nd player in campaign
go to multyplayer and press system link then go to host or start a game
Yes, Halo 3 supports multiplayer Xbox Live gaming for any one with an internet connection and a xbox live Gold account
To play on Halo 3 matchmaking you must have a gold xbox live membership and an internet connection to play on matchmaking. If you only have a silver membership it will not let you play matchmaking.
halo 3 obviously