When I synaptic install a gnome applet in ubuntu, it doesn't show up in the 'add applet' program. How do I put these on my gnome bar?

When I synaptic install a gnome applet in ubuntu, it doesn't show up in the 'add applet' program. How do I put these on my gnome bar?

They install okay, but I can't find them anywhere that they can be added to the toolbar. Help?