So yesterday we moved a computer and unplugged/replugged some cables in the process, and now our labs network is no longer working (some people got mad because our router was apparently sending ip adresses to the entire building). So I've been given the job of getting it up and running properly. I know very little about this stuff, but here is how I tried connecting it last. Ethernet into a D-link wireless router into the WAN. From port 1 (4 port router) into the uplink on a linksys switch. Then all the computers are connected through the switch. The only problem is that none of the computers work. If I connect a computer straight to the router, then it works, but nothing throught the switch. I believe all the cables are straight cat5 cables. Let me know if this setup is just completely incorrect or if there's something else I can try.