Please help me!! I've posted this question 5 other places now, with not a single response!!

[James Simons <jsimons ntinet com>]

Hello All,

I'm new to Linux, and installed Redhat 7.2 on a system here about a week 
ago.  Yesterday I decided to change some DNS info and after I rebooted 
it won't let me into GNOME.   When I log in I log into localhost like 
normal, but at the command prompt I'm root localhost root.  I'd like to 
leave it this way, but I really need to get back into GNOME, because I 
really don't have much of a clue otherwise.  Hell, I have to reboot the 
computer just to exit emacs because I have NO idea how to save and exit 
a file...wish I did.  Is there some way I can change a gnome 
configuration file to allow me to go into GNOME now?  All that I can 
figure that happened is that GNOME looks for a specific host when you 
logon and if that host is not found then it doesn't load.  Is this right?

Additionally, I decided to install RH 7.2 on  my system that I have at 
home.  During boot up, it connects to Road Runner through my NIC and 
gets a ip address.  When it does get an ip address it won't take me into 
GNOME wither.  It says c login: and when I do log in I am root c   When 
the NIC doesn't get an ip from road runner (unplugged the cable) I 
bypass the command prompt and go into GNOME.  This is really getting 
frustrating ;-)

Any help would be greatly appreciated,
James