If you have more than a few people in your office, you'll benefit from setting up a shared connection to the Internet.
Many companies simply use dialup modems to connect to the Internet.
This works fine for an individual user, but in an office, a shared connection will offer better performance, as well as cost savings. The idea is really simple. Here's a quick exercise. You could provide your employees with faster access, at the same price point, by using a shared DSL connection. So, you can provide the same 6 employees with a link which is roughly 8 times faster, for the same price.