How to play downloaded Games?

[Luigi00]

Hi
I learned that if u have a XBox 360 u can also download games, but how can I play them? Is there some sort of mod chip required, or only a special software or how would that work? Could I damage my Xbox by doing that?
A usefull link would already be enough!
Thanks

[Arakon]

you don't, you piece of $#!t pirate.