ok well like geoff said, if you're okay with running wires yourself, you can do it for probably less than $40, you'll need to buy wire, rj-45 connectors, and a crimp for the rj-45's. To pay someone to come in and do that would probably be in the hundreds of dollars. If you're connecting to a router, the cat-5's should be made straight-through. You can look up the difference between straight-through, crossover, and rollover all over the place online and see what connects to what if you don't have a router for some reason.