Can you gat a wireless network cable for the PS2?
You can get a wireless access point, which allows you to connect your PS2 (or other device) using a standard ethernet cable, and then the access point connects to your wireless network. This is also called a wireless bridge. You can find them over in the computer networking section of your electronics store. You will need a separate PC or laptop to configure the access point. After that, the PC doesn’t need to be connected.
Purchase something called a Network Bridge, or an Ethernet converter. Buffalo sells a pretty good one that’s cheap and you can hook up 4 items to it. Here’s a good one: http://www.buffalotech.com/products/wireless/wireless-g-mimo-performance/wireless-g-mimo-performance-ethernet-converter/ Note: You need an existing wireless network installed at home before this will work. Otherwise you’ll have to buy an extra thumb drive that creates a wireless signal that’ll plug into your PC.