WELL..there are several ways to do this..if you can point directional antennas
thu the windows of the house in the way and hit the other side correctly..you dont need to do anything else....just get 2 hi gain directional antennas..at least 10 to 14 db is best..

sure you could put them on poles... better hope lighting doesnt hit them...wooo hoo that would be funny...mostly the birds will peck and poop on them...maby build nests on them.

all you need is one good quality router and 2 good antenna ...any measly antenna will for your pc as it will be next to the wirless router anyway

REMEMBER THAT THE ROUTER YOU GET NEEDS TO HAVE REMOVABLE ANTENNAS.. OR YOU WONT BE ABLE TO CONNECT YOUR EXTERNAL TO IT..

IT SHOULD ALSO BE AN "N" RATED ROUTER.. NOT B OR G

THIS IS REALLY A PRETTY SIMPLE JOB.. THE HARDEST PART WILL BE STICKIN THE EXTERNAL ANTENNA OUT... MAKE SURE ITS MOUTNED SOLID ENOUGH TO HANDLE HIGH WIND AND LOTS OF STUPID BIRDS SITTIN ON IT...