My dad currently has two phone lines, the 2nd that is used for dialup internet. He currently also has an underground phone line running out to an outbuilding (a shop) and they can dial up to the internet from a out there, too. He's talking about ditching the 2nd line and getting DSL, and asked me what options there were to be able to use the internet out there. It's too far away to use regular wireless radios. Could he run a long Cat5 cable underground and just connect it to a router? At my old work we used a couple of metal radio dishes to bounce a signal across a couple of buildings, so that might be an option, albeit an expensive one. Are there any other ideas or things out there to extend an internet connection?