I myself am somewhat a newbie to the linux sceene. But you question seems to be a setting issue. This i may be able to help you with since i get those question all the time @ work. First things first.
Do have a firewall installed ? If you you might be blocking that port.
First lets see if you have an IP. Go to the "Console" and type
for RH i know it's
if you see a valid ip then awsome, you have an IP
Now we're going to try pinging a site. Type
If all works, try check to see if you need to put in a proxy to surf.