ZyXEL PLA407 HomePlug AV 200 Mbps Powerline Wall-Plug Adapter (Starter Kit - 2 Units) for $97.99

The powerline solution simplifies network setup by turning the existing power lines into a high-speed network. Just plug a PLA-407 with Ethernet link to a broadband modem into the power outlet in one room, and plug another with link to a PC or any devices requiring Ethernet connection in the other rooms, you can easily and instantly connect to the network without laying complicated wiring at home.