You might want to try denu:
from http://freshmeat.net/projects/denu/ Denu is a portage-based menu generator/editor for Fluxbox, Openbox, GNOME, IceWM, KDE, XFCE4, and Waimea. Its main feature is Web-based updates, and it also has some customization features. It even is portage-aware, so most (if not all) of the apps you installed should show up in denu, then you can create a menu for kde, gnome and every other supported wm. Then the menu will be the same for all of them. //Thomas -- [email protected] mailing list
