Things You'll Need
Instructions
Press the guide button on the controller to turn on the controller and the Xbox 360.
Insert the Call of Duty 4 disc into the console and start the game. The game should start automatically when you insert the disc. If it does not, start it manually by selecting it from the Xbox 360's main menu.
Select "Multiplayer" from the game's main menu. Select "Xbox Live" in the Multiplayer menu.
Select "Party Invite" in the Xbox Live menu. This opens up a list of your friends. Select the friend you want to invite. When he accepts, he will be in your party. The game will randomly set you on teams. In ranked play, you will always be teammates. If you create a private match, you can play against each other.
Find or create a match. Select the "Find Match" option from Xbox Live menu. The game will automatically find a match for you and join the game. To create a match, select "Private Match" in the Xbox Live menu. You can select "Game Setup" to change options such as the map, the time limit and game style. Select "Start Match" to start the private match.