The MAC address is at the bottom-right corner of the screen.From the Xbox Dashboard, choose 'Settings'.Turn on your Xbox console with no game disc in the disc tray.If you have an 'Alternate MAC Address' configured on this screen, you MUST remove that address and register the 'Wired MAC Address'.At the bottom of this screen you'll see a heading called 'Wired MAC Address'.Go to the 'System' area of the Xbox Dashboard.To find the MAC/Adapter Address, find your game console below and follow the instructions.