Well it isn't very easy. GNOME makes it hard because they don't want newbies to mess it up and not be able to get to vital programs. Apparently GNOME looks for launchers in several different directories one of which is /usr/share/applications/ and puts them in the menu. You can add something to the menu by copying the launcher to /usr/share/applications/ (as root), then typing into the terminal:
Code:
gedit /usr/share/applications/<name of launcher>
You may want to issue the "ls" command and find the exact name of the launcher first (it won't be the same as the one you see in Nautilus and will be a .desktop file). Then, using gedit, add a line (if it isn't already there) that says "Categories=" and then put:
"Application;Game;X-Red-Hat-Base;" if you want it in the Games menu.
"Application;Utility;X-Red-Hat-Base;" if you want it in the Accessories menu.
"Application;Graphics;X-Red-Hat-Base;" if you want it in the Graphics menu.
"Application;Network;X-Red-Hat-Base;" if you want it in the Internet menu.
"Application;Office;X-Red-Hat-Base;" if you want it in the Office menu.
"Application;Settings;X-Red-Hat-Base;" if you want it in the Preferences menu.
"Application;Development;X-Red-Hat-Base;" if you want it in the Programming menu.
"Application;AudioVideo;X-Red-Hat-Base;" if you want it in the Sound and Video menu.
"Application;SystemSetup;X-Red-Hat-Base;" if you want it in the System Settings menu.
"Application;System;X-Red-Hat-Extra;" if you want it in the System Tools menu.
Save it and restart the Gnome Panel (or just all of Gnome), and it should be in the menu. Most of the launchers in the menu will be in /usr/share/applications/ so to edit one just edit the file in there.
If it doesn't work to edit one or delete one from there type "locate <name of launcher>" into a terminal and delete any duplicates that the Gnome Menu might be using.
Hope this helps.
-Tuxlover