bill001g :
Yes but it will be cheaper to buy another internet circuit. The equipment to do this is not really expensive a couple of long distance outdoor bridges.
First you need clear line of site no big mountains or buildings in the way but the larger issue is that at those distance you have to mount the devices very far above the ground so the ground itself does not affect the signal. You also have a very small curvature of the earth to worry about. Likely you would have to go 50-100ft up. If you could even get permits from the city to put in a tower it costs a lot to dig holes and have cement poured
what is this suppose to do then?
http://www.amazon.com/NanoBridge-Cost-Effective-5GHz-22dbi-MIMO/dp/B0055PKSCK/ref=sr_1_1?ie=UTF8&qid=1377921408&sr=8-1&keywords=nanobridge+m5