Help needed Please ;D

Hello everyone first of all great forum i like a lot very informative : ) and now to my help request ;D

on this picture u will see the layout of the yard and 3 houses 1 2 3 which i will try to connect the letters z x y indicate the rooms where other pcs are placed so i am trying the following

i want to connect the houses 2 and 3 with house 1 which has all the connection
iw shown the distance of the houses too so my question is how should i do it what does it all take etc.

i was looking at the cisco

Amazon.com: Cisco-Linksys E4200 Dual-Band Wireless-N Router: Electronics

and was thinking of adding 2 wireless cards to other 2 pc in the other houses and thats it but since im not sure etc id like you advices etc thanks for the help



also sry for posting 5 nonsense posts but i needed it for these links...