superuser in gnome

[Harold Hartley]

Hi, I am using gnome for the first time since I last tried it a little 
over 10 years ago.
I've always used kde before and now running gnome due to some of the 
feature gnome has to offer.

I'm trying to figure out how I can open a terminal un superuser mode so 
I can work on some configurations.
I'm so used to kde that I was able to click run and then type in kdesu 
konsole, but I'm sure its diiferent in gnome and I've tried to look up 
what I need to do.

I'm sure I'll get the swing of gnome after a while like I did with kde.

Thanks
Harold