I work at a summer camp that has Direcway satellite broadband installed in one of the offices in a building. We want to find a way to run the Broadband to another building 300-400 feet away. There is a clean line of sight and there is also a pipe with cables that runs between it. What is the most cost effective way to do this? There is already an old intercom cable that is a 8 wire cable running between the buildings could this be used?