Just got Cox cable, fast as lighting. Problem is that it only works on one computer. I soon figured out that I needed a router to share the connection, so I brought out my old Linksys BEFSX41 and figured I would just plug-and-play. No such luck. Still only one connection works, and now Linksys won't offer me support because my warranty is up (my fault for not knowing how long ago I actually bought it) and wants me to pay for technical service.

This has to be simpler than that. Where am I going wrong here?