Trouble Adding to KDE Menus

[Hal Vaughan <hal@thresholddigital.com>]

I'm using KDE 3.3.2 and recently I added Nvu to my system, then created a menu 
item for it on the KDE menu.  It stayed until I had to kill X 
(ctrl-alt-backspace).  I tried creating a menu entry, then logging out and 
logging back in, but it still disappeared.  Since then, I added Pingus and 
K3D through apt-get.  Neither showed up anywhere on the menu.

Any idea why adding packages is not adding menu items, or why ones I add 
vanish on the next login?  The best I can come up with is that entries are 
not actually being created as files, so they vanish after I logout, but I 
would think that even within a session, it would be necessary for the files 
and links to be created.

Any suggestions?

Thanks!

Hal