open a terminal window in gui (or Desktop) and type
if you are not logged in as root
Code:
su
so it will ask for a password
password:*****
give ur password
yast
if you are logged in as root then just type
YaSt is Suse's Configuration tool, here u will be able to setup Networks (@least thats what sites says... I use Fedora Core1 Linux so am not too familiar with SuSe)
Hope this helps...