How do you download and play xbox 360 games?

I have a xbox 360 slim and i know where to download xbox games online but i need to know how to get my box to play them. I would rather do it WITHOUT ''flashing'' my xbox. And can i just use a dvd disk to burn on the game, and is there anything i need to do other than just burning the disk?

Sure, just set your oven to 450° and insert your xbox for one hour and wahlah you'll be gaming hardcoe in no time! And btw, no it's not possible at all without a modded xbox - and if you mod your xbox prepare to have that console banned from xbox live if/when you try to log on with it