Things You'll Need
Instructions
Turn off both your PlayStation 3 and your Alienware notebook computer.
Locate the Ethernet input on the rear or side (depending on the model) of your Alienware notebook. Plug one end of an Ethernet cable into this input.
Stretch the cable to the rear of your PlayStation 3. Plug the cable into the Ethernet input on the back of the console. Your Alienware notebook computer is now connected to your PlayStation 3.