Even though some people have good luck, modding is really not a beginners sport.
I don't know how many electronic projects I've done, everything from design work to final preps for items I've sold... yet in spite of that, to do the Xbox install properly takes TIME, patience, experience, and a -BIG- magnifying glass and loup!
Most people should let someone else take the risk, who are WILLing to fix their own botched jobs.