Don't install hard mods on your xbox dude they are very bad I ruined my old xbox doing that hacked and manipulated files can ruin it! If you sign on xbox live once with your hardmod on you will be banned on all your accounts instantly it can also screw your dashboard and your entire xbox up itself
Softmod it... SoftMods are better in my opinion tho be very careful and do some research on how to do it
He already has the chip, he might as well not back out now. I'm not too elite on this subject, but I have install Linux on my old xbox once before. You can try this place for help in addition to dfuzion: http://forums.xbox-scene.com/index.php