XWindows and GNOME

Hi,

When I orginally installed RedHat I didn't select the XWindow installation
at all, hence I get a single black console screen upon startup.

I'd like to install XWindows and GNOME - what are the packages and
installation procedure to get these working...  I have installed XFree86 and
gnome-desktop, but it didn't fire up automatically when machine rebooted,
and after trying "startx" it complained about a config file missing, so I
ran XFree86 -configure, then I copied the XF86Config.new file into /etc/X11
and then ran "startx" again, but didn't get a a window manager...running...
Hummmm, I believe I am shotting in the dark... So I figure that I didn't 
install
the correct RPM's or additional ones... not sure - but there has got to be
an easier way.

Please help!

Thanks,
Joel