There are one mile wireless link hard companies galore.
Here's a prior discussion -> http://forums.cnet.com/5208-7589_102-0.html?threadID=235299
They do it all from WISP to many miles.
Our town lost it's only highspeed provider. So I was wondering if it was possible to use my router (or purchase some other eqp. ) to connect two to 3 xbox360 from one house to the other wirelesly from 100 to 300 yards away. We've linked them bf with a LAN link but this would have to be wireless.