Things You'll Need
Instructions
Using a Wired Connection
Turn off your Xbox, PC and wireless router.
Plug one end of the Ethernet cable into a free port on the back of your router.
Plug the other end of the Ethernet cable into the port on the Xbox 360.
Turn on your modem, then your router and then your computer.
Remove any CD from your Xbox 360 and turn it on. The Xbox 360 will now detect the network connection and load the Xbox Live area.
Using a Wireless Connection
Purchase a Xbox 360 Wireless Network Adapter from a local video game store or online from sites such as Amazon.com, Gamestop.com or Walmart.com.
Snap the adapter in place into the back of the Xbox 360.
Plug the USB cable attached to the adapter into the USB port.
Raise the antenna on the adapter.
Verify that the green light on the adapter is on.
Turn on the Xbox and select "My Xbox" then choose "System Settings."
Select the "Network Settings" option.
Enter your wireless network password into the provided field.
Choose "Yes" when prompted to update your Xbox Live software.