I have those gizmo's you plug into the mains that use your electrical cables as a wired connection. Much better than any wireless router I have ever had. If you want another access point just add another plug in module. It's a much better solution and it's much better security wise.

I have a home cinema with wireless speakers and that used to interfere with my connection something awful. Wireless is now totally pointless in a building unless you wanna sit in the garden with your lappy or use a portable device like my iphone.