THIS IS WHAT AN EEPROM LOOKS LIKE..... THIS ONE'S NUMBERS HAVE BEEN CHANGED SO IT WON'T WORK.
#Please note ALL fields and Values are Case Sensitive !!
[EEPROMDATA]
XBOXSerial = "205913843205"
XBOXMAC = "00:50:F1:D1:6C:4A"
OnlineKey = "D1:76:6B:8B:08:94:8C:F3:B0:03:B4:F7:C9:6D:FA:0E"
#ONLY Use NTSC or PAL for VideoMode
VideoMode = "NTSC"
#ONLY Use 01, 02 or 04 for XBE Region
XBERegion = "01"
HDDKey = "68:16:91:D5:CD:8C:BD:B1:DB:DB:6B:14:72:09:D4:EE"
Confounder = "8B:07:34:81:B6:4B:74:FE"
Notice that there is alot of other stuff in their like the "Confounder and Online Key".
Just use the Backup Feature of Configmagic and you will get all this info. People are only trying to change a few of these and having little or no success. This way works and you won't need a new hard drive or gamer tag