<< Huh? I tried the settings it showed (IP, subnet, Bcast) and it still didn't do anything. >>
Ok. Ill try this without knowing anything about redhat linux and without knowing the settings for your network or the settings on your system.
What did you try after you put all of the settings in? Did you try and ping the internal interface of your router? What about one of the Windows machines or whatever? If that worked did you try to ping the ip address of a site on the net? Did that work? Yes: Ping a domain name. No: get your dns settings correct.