There are several different kinds of technology, ranging from wired technologies that use standard Ethernet cable, power lines and home phone lines, as well as wireless technologies like Wi-Fi and Bluetooth, that might be appropriate for some applications, but not all.

FORBES: Crazy For A Connected Kitchen?

Each computer you want to network needs its own HomePlug box, with an Ethernet or USB cable running to the PC and a power plug connected to the wall.

FORBES: Magazine Article

Looks like a regular ol' USB plug will do the honors, and the IVL saps power from the TV while sipping internet off of an Ethernet plug, so added cable clutter will be fairly minimal.

ENGADGET: Sony fleshes out details and pricing for Internet Video Link