I saw this advertised recently in an issue of micromart.
Instead of installing ethernet cable around your home and instead of the problems
associated with wireless you can use your mains power supply as a home network.
You plug the adapter into a power socket and you plug an ethernet cable into it from the
computer or router. You then plug another adapter into a socket in another room which
connects using ethernet to another computer.
heres a couple of links,
http://www.shopmagenta.com/product/HP85.aspx
http://www.nickknows.com/browse.php?category=639
Im thinking about getting some probably the cheaper ones in the first link. But i cant
find any decent reviews online and i have never seen any in any magazines either.
Does anyone have any?