Hardware Secrets has posted a guide about building a small network using a broadband router

Broadband routers are the easiest way for you to build your own network. Using them, you can automatically share your broadband Internet connection among all computers on your network, as well as files and printers. Since they also work as a hardware firewall, it is also the safest way to be connected to the Internet nowadays. The installation is really fast and you can literally build your own network in just a few minutes. In this tutorial we will show you how to build your own network using a broadband router.

How to Build a Small Network Using a Broadband Router