if you install dvd region x it will become multi regional.you can either install it via a link to another pc(don`t ask me what to do then ,i got the brother in law to do mine)or burn the image onto a hewlette packard cdrw and just keep putting the disk in evreytime you want to load a dvd.follow this link and see http://downloads.master4best.com/xbox/audio_video/
hope this helps