Wireless routers and there signals?

i am needing to connect a computer with wireless 480 feet away from the office so i am able to send paperwork.. How should i go about of doing this i know just a wireless router will not have a strong enough signal to go 480, a wireless repeater- with i think will only give me another 100 feet added to the wireless router, or can i use two repeaters, or am i able to set up two wireless routers in between the two locations.. ehlp!!!!!