LAN Cable Network + :/

[SystemError]

I have 3 computers hooked to the net by a hub, router and cable modem. I installed RedHat 7.2 on one of the computers, but can't seem to set up the network card so it will also have net access. I tried to configure it, but when I was testing a auto. config. option messed something up. Now I am getting a dhcppc3 login: prompt.

I also can't get back to RedHat... :/

I am pretty new to Linux (if you can't tell, which I am sure you can), but a quick learner... any help would be great.

Thanks,
-Rocky

[SystemError]

After I reinstalled it, I was able to fix the problem in the installation... I was assigning the computer the wrong subnet mask. And because I am new to this OS, I did not know how to fix it. :(

-Rocky