Those brains over at
has made a great how to on making your own router...
\"Many people are getting into using either a hardware router (like the Linksys models) or proxy/NAT software (Windows ICS: Win98SE/ME or WinNT/2k) for sharing their Internet connection. This is because it gives the ability to share the connection with up to 253 computers off one ISP account, as well as offering a firewall for centralized protection. Rather then going out and spending $100+, we\'re going to make our own router that is able to support either a 56k/Dial-up modem or Broadband (DSL or Cable) for next to nothing for cost because we\'ll be using Coyote Linux as the Operating System (OS) and routing software.\"
