Find out what needs to be upgraded.
Communication companies can charge for install fees, but you might be able to negotiate the price down. My parents needed a trench and new line run for cable service about 100 yards long, and the cable company charged something like a flat $100 fee.
DSL service depends on distance from switching equipment. Too far away, and the speed is either junk, or non-existent.
If cable is available, I'd go that option first assuming the price is reasonable. You might look into satellite service, though I know nothing about modern implementations, but I assume it's much more expensive.