Things You'll Need
Instructions
Attach one end of the Ethernet crossover cable to an available port on the PS3 and the other end to the computer.
Turn the PS3 and the computer on. Click "Start," "Control Panel," "Network Connections" on the PS3 screen.
Right-click the USB modem connection and click "Properties," "Advanced." Check the box next to "Allow Other Network Users to Connect Through This Computer's Internet Connection."
Click "Settings," "Network Settings," "Internet Connection Settings."
Select "Yes" for the PS3. Follow the prompts on the computer to complete the configuration. You have now connected a PS3 to the Internet via USB.