i have just done this after my bekin range extender failed, belkin sent me to mains adapters and a wirless router so i now have 2 x access points in the house, the device just picks the strongest signal, my range extender would not let me what iplayer through my wii, now my set up lets me
you can buy them so you dont need the router
http://www.amazon.co.uk/gp/product/B...QM6YP4BCECYHMW
something like this
http://www.amazon.co.uk/Devolo-Wirel.../dp/B000RY8TKC