From what I can see, you know that banning is based on your eeprom, not your hd (at least not right now :rolleyes)
Buy a new eeprom file from someone, use config-magic to restore it, and only go on live with your chip off, and the factory hd in your box. They shouldn't reban you as long as you wipe everything clean and just leave the ms files on the hd, and have your chip off.
Wait wait...did you try to recover your account on your banned box already?? Not smart dude
Wipe the 8/10 gig drive clean, and reinstall the ms files. Re-do your eeprom. *Then* run account recovery. Make sure you keep your factory hd clean though.