To change your character for matchmaking and custom games, press the start button at the main menu or in any of the lobbies (campaign, matchmaking, custom games, theater), then press right on the left thumbstick. Scroll down to the "Appearance" option, then press A.
halo 3 odst, unlike halo 3, has no matchmaking, sorry
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.
Matchmaking
No not unless you were banned from Xbox live all together.
That's impossible to answer...expecially the fact that there is over 200,000 people playing halo MATCHMAKING alone!!!
keep doin matchmaking.
Shoot and kill people.
play in matchmaking
Yes. Halo 3 and Halo: Reach both have Matchmaking.
on the halo 3 main menu go on matchmaking pick a gametype and select start match making
no it will not it will have firefight like a halo version of gears of war 2 horde mode
there are lots like getting skulls matchmaking (online) and yea??