First of all, we have an Xbox section.
There is not too many hacks for the xbox and for all of them you will need a Jtag. Xbox also has a very good system for detecting cheats. It can detect if game files/data change, when you play online. So you will get banned very easy.
I'll send you a PM with something i can't post here.
Most people can guess what...
//EDIT: I can't send you PM's. Gimme your email or something and i'll tell you about the perfect site for console game hacking. I am teasing you admins...