For all those except Mandriva & Fedora (RedHat) It's "on" if you install it, "off" if you don't. I don't know if Mandriva & Fedora have an option to install without the GUI or not ... I doubt it. But even if it's there, you don't have to use it.
Last edited by rickh; 07-19-2006 at 10:48 PM.