Things You'll Need
Instructions
Insert one end of the Ethernet crossover cable into the computer, and the other end into your PS3.
Click on "Start" in the bottom left-hand corner of the screen. Select "Control Panel" from the Start menu, and then choose "Network Connections."
Right-click on the USB modem connection, and select "Properties." Click on the "Advanced" tab, and then click inside the box labeled "Allow other network users to connect through this computer's Internet connection." Click on the "Settings" button.
Select "Network Settings," and then "Internet Connection Settings." Choose "Yes" for PS3.
Follow the instructions that appear on the computer screen to finish connecting your PS3 to the USB modem connection.