Use a crossover network cable. On your computer, go to My Network Places, add a new network place and put in the IP of your Xbox. You will then be able to access your Xbox drives from your computer
I wished it was that simple , I spent weeks getting it right , If you are struggling vist http://www.chefelf.com/xbox/networking.php i found it to be very educating , Mods hope this link is not infringing any rules , If so please remove.