Things You'll Need
Instructions
Insert the wireless adapter's snaps into the back of the Xbox 360. Plug the USB cable into the USB port on back of the console.
Lift up the network adapter's antenna. Turn on the Xbox 360 and the television.
Press the down arrow on the Xbox controller to scroll to "My Xbox." Press A to select My Xbox and scroll to "System Settings."
Press A and scroll to "Network Settings." Highlight "Configure Network" and press A.
Highlight "Wireless Mode" in the Basic Settings section and press A. Highlight "Scan for networks" and press A.
Scroll down to your network's name and press A. Type the network's password and select "Done" to complete the setup.
Highlight "Test Xbox Live Connection" and click "Yes" to update the console's software. Press "Y" repeatedly to return to the main menu and select "My Xbox."
Highlight "Join Xbox Live" and enter your email address for a new account, or enter your existing Windows Live email address.
Choose an avatar for your account. Enter your name, birth date and address in the onscreen form.
Select "Free Membership" or "Gold Membership." Enter your credit card information if you select the gold membership, and click "Done."