Instructions
Unplug the ethernet wire running from your modem to your PC from the PC. If this wire runs to a router, unplug it from the router side.
Plug the cable into the ethernet port of the PlayStation 2. Make sure the system is off when it happens.
Reset your modem. This is done by pressing a small button on the rear or bottom of the device. This process takes from 10 to 30 seconds.
Turn your PlayStation 2 on. Your Internet will now be connected to your PlayStation 2.