How can I reconfigure network settings?

[Generation NeXT]

Hi,

I'm desperately trying to get stuff to work.  I am
relatively new to Linux, and Mandrake is highly
recommended.  So I installed Mandrake 9.1.

I'm not able to configure my networking setup.  I try
the netconf from the KDE Start Applications menu, and
it says I need root.  I then tried to setup a log in
for root through KDE, but couldn't figure it out (also
heard this wasn't recommended).  I then noticed that
netconf uses linuxconf, so I went to the terminal, and
typed in linuxconf and got the following:

---------------------------------------------------
Error message from remadmin :Xlib: connection to
":0.0" refused by server
Error message from remadmin :Xlib: No protocol
specified
Error message from remadmin :
Error message from remadmin :
Error message from remadmin :Gtk-WARNING **: cannot
open display: :0.0
---------------------------------------------------

(1) So, how do I launch linuxconf? (2) Why doesn't
launching linuxconf work? (3) How can I configure the
network from the command line?

 - Joaquin  

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