I just fixed my Xbox and I was wondering if you could burn XBMC to a CD/DVD and then copy it to the Xbox hdd via the file explorer.. I don't need to edit the bios file since the BIOS allows for that in its menu. (Just need to change xbmc.xbe to have first boot priority, and map XBMC to a trigger)

Just wondering if anybody knows if this really works.

Don't have a crossover cable or a router in which I could do that.

if you've got a patch cable making  a crossover  cable is easy. cut it in half strip  the wires and re-join them as follows:

   

simply join the ends that the table tells you  to join. preferably with solder if you can, then insulate  each individual wire with insulating tape and then insulate it overall.

if you don't feel comfortable  with doing this or just  don't  have the skills or equipment  try it with a normal patch cable. a lot of  computer NIC's can detect what type of cable and  connection  is  used and will  adapt its pinouts  so it will work. if the worst coms to worst you can pick up crossover cables for peanuts on ebay...