If you softmodded ur xbox, u SHOULD have your eeprom.
AND you should have a gamesave exploit on ur xbox HD.
So.. wheres your eeprom and what gamesave exploit is on ur HD (for with game i mean) and can you get that game?
Also, you exploit still gets triggerd, so u could make it load slayers for example, since it will first boot the disk, go "hey this aint normal", boot from HD to display the "this is not a xbox game, dvd or audio cd" dialog (causing it to boot the exploit), then then NKpatcher or your BIOS loader runs allowing your xbox to run unsigned code, and then boots from the dvd drive 1st. Voila, you have a FTP server running.
BTW u can just use 2 normal cables and a HUB/Router (ADSL multi-PC modems r just routers
)
And ofcourse if u really cant figure it out, u can find my e-mail via my sig.