i assumed your xbox was modded...
you can buy a chip for $9.50 and i am sure that is less hassle than buying an eeprom programmer, removing and reinstalling the eeprom chip and whatever else would be required down that path to fixing your xbox.http://forums.xbox-scene.com/index.php?showtopic=404751
if you need to get back onto xbox live, you will also need to purchase a avirgin, unbanned, unmarried eeprom and use the chip to flash that new file to the eeprom chip because the original eeprom and dead hdd are married. (search marriage theory in xbl sections)
obtain an installer disk(from your favorite bittorrents site or xbins) - here is a handy link for xbins access.http://www.macsat.com/xbins/index.php