Instructions
Select "Settings" from the PS3 menu. Select "Network Settings."
Go down to Internet Connection and select "Enabled." Go down to "Internet Connection Settings" and press the "X" button.
Select "Custom" as the setting method. Select "Wired" if you're connected to your Internet network via an Ethernet cable or select "Wireless" if you're connected to your Internet network wirelessly.
Select "Auto-Detect" as the operation mode. Select "Manual" to manually enter an IP address. Select "IP Address" and use the on-screen keyboard to enter the IP address. Press the "Right" button on the directional pad to continue configuring other connection settings relative to your Internet network.