Instructions
Access the back of the U-Verse Residential Gateway. Locate a free Ethernet port on the back of the device.
Plug an Ethernet cable into the free port. Find the "LAN" port on the rear of the PS3.
Insert the other end of the Ethernet cable into the "LAN" jack on the PlayStation 3. Turn on the console and your television.
Select the icon resembling a toolbox ("Settings") by highlighting it with the control stick and selecting it with the "X" button.
Move to the icon representing a globe ("Network Settings"). Select with the "X" button. Choose "Yes" when the console asks if it is acceptable to be disconnected from the Internet.
Pick the "Easy" option from the two choices presented. Save and exit as indicated. Allow the PS3 to auto-configure the proper Internet settings. Your console is now connected to the U-Verse Internet service.