Adding other gnome applets to panel?

[Xamindar]

I manually compiled and installed some additional gnome panel applets I found [url="http://www.ubuntu-unleashed.com/2008/05/some-gnome-panel-applets-you-may-not.html"]here[/url] but I don't know how to get them to show up in the "Add to Panel..." menu in gnome. Does anyone know how to add them there or to even get them to load in the panel?

Also, I emerged bubblemon which is in portage but it also doesn't show up in the "Add to Panel..." menu in gnome. Does anyone have it working?