been running one of these for a few years with pretty decent success....
http://www.streakwave.com/itemdesc.asp?ic=Q-Bridge
i moved into a house roughly 1/10 of a mile away from my parents house and i attached my house's router to their network. i am also running one of these at their house attached to their network:
http://www.slingbox.com/go/slingbox#.ULuRvoZ9JjM
it is connected to a vcr which is connected to their cable tv signal.