Things You'll Need
Instructions
Determine how you are going to connect your Xbox. If you have a wireless router or modem, grab the wireless adapter and plug it into the back of the Xbox into any of the USB ports. If you have chosen a wired connection, plug an Ethernet cable into the back of the Xbox and the other end goes into your router (or modem, if you do not have a router).
Turn on your Xbox.
Head all the way to the right of the "My Xbox" tab and choose "System Settings."
Choose "Network Settings."
Choose "Configure Network" if you have a wireless connection. Press "A" and search for your wireless router/modem. Enter in a password if you have it. Press "B" when done to return back to the "Network Settings" page.
Choose "Test Xbox Live" connection. If everything passes, you have configured your Xbox with a DSL connection.