Halo 2 and 360

I was told that I needed to get a download from the enternet and load it on my new 360 to play halo. This is not true. All you have to do is place your game in your new 360 and it will tell there is a new update for this do you want it. Click yes and it will do it for you. You do however have to load all of the new maps that came out over the summer on the 360.