PowerLine AV Wireless N Extender
Here's a way to extend a building network to any place there's AC power. The PowerLine AV Wireless N Extender from D-Link turns any AC power outlet into a potential wired Ethernet port at speeds as fast as 200 Mbps. It extends wired Fast Ethernet (100 Mbps) or 802.11b/g/n networks onto a building's electrical wiring. A second adapter like the PowerLine AV500 converts any AC outlet in the building to a network port. List price is $119, but it sells on the street for less than $80.