You can try what I just did. I used a belkin wireless bridge to hook up to my existing wireless network. You have to configure it with the SSID and encryption of your network, and also the wireless MAC address of the router you want to hook it to so it knows where to connect (because it's a bridge, not a client). Then connect any ethernet PC to it and it should just work without any configuration of the PC. They are about $40. It may only work with G routers, and possibly only belkin G routers, I don't know.