Things You'll Need
Instructions
Connect one end of the ethernet cable to any of the available ports on your Internet modem or router.
Connect the other end of the ethernet cable to the ethernet port located on the rear of your Xbox 360 console.
Power on your Xbox 360 by pressing the center button on a synced controller, making sure there's no disc in the disc tray.
Scroll to the "My Xbox" section of the Xbox home menu.
Choose the "System Settings" option, and select "Network Settings."
Choose the option to "Test Xbox Live Connection." Wait a moment while your Xbox 360 tests the connection to Xbox Live.
Return to the Xbox home menu, scroll to your avatar under the "My Xbox" section and press the "A" button.
Choose "Join Xbox Live" and follow the instructions as they appear on the screen to register your account. You will be asked for information such as your email and birth date.