Instructions
Turn on your Playstation 3. Click on "Settings" and then select "Network Settings."
Select "Internet Connection" and then choose "Wireless."
Select "Custom" from the list of options. Select "Auto Detect." Select "Manual" for "Address Settings."
Enter the IP address for your router and then click on the "OK" button.
Select "Manual" on "DNS Settings" and enter your primary and secondary DNS Servers. Your IP address will now be set up to connect your router to the Playstation Network.