Halo 3 live..? GTA IV live..?

[Trabits]

The title says it all.

How do I play Halo 3 and GTA IV live on the 360? I have xBox live activated. What do I need to play online? Or how do I play on line?

 

[XMANLIVE]

For halo 3 you just pick matchmaking.

 

[desertshark666]

You need a wireless router to be connected to your internet. It is the piece that sends the wireless internet to your adapter.