I see in your later post that you are in trouble now, so it might be irrelevant. You can always use ximian gnome desktop, just point your browser to
http://www.ximian.com, you will need lynx or linx installed on your system to perform download of ximian installer, and I afterwards everything is straight forward, you don't need any gnome relevant packages installed prior ximian download, they will all be delivered to you automatically through ximian install script.