Alright, so I have modded 360 controllers for a few months with microchips n stuff and I'm looking to further my modding.
Tomorrow (i guess today technically), I will be calling Microsoft to rip em off of a data transfer cable to start modding!
I understand the basics and such, I have been looking into this for quite a long time, like 5 hours!
So I read a topic, someone offering to upload MP maps, and another topic with gamesaves and such, but can you transfer between other members of this amazing community, downloadable content.
Like perhaps an expansion pack for a game that normally would cost on the Live Marketplace? (Cars in racing games, expansion packs, ect.)

Sorry if this is a re-post. Like I said, I have spent a few hours browsing for random, yet interesting things, and I didn't seem to run across anything such as this. And if someone could hit me up with some links to the basic modding via. the transfer cable method (is it considered hex editing?). I will mainly be modding MW2, but I'm sure I'll be doing much more than that in the future.

Thanks,
Spence.