...u seeem to not understand much about computers do you?
Have u even flashed your 360?
You basically download them from here:
thepiratebay.org
Then you go into the search bar look for what ever you need.
Then you download them using a programm like "Utorrent" or 1million others and then you put them on a disk.
I advise you to stealth patch them though otherwise you will get banned of xbox live with in 1 day...dispite the fact that you will get banned by the end of the year anyway.
So either pull out the internet cable out of the back of ur 360 and play flashed.
Or buy games like everyone else...help the economy (even tho their insanly expensive)
and be able to play online. The best feature of 90% of games!