Lost Kmenu bar while installing router.

[Steven Vollom]

I just got help from a friend setting the configuration on the 
installation of my new router.  It worked fine; my laptop was able to 
connect wirelessly.  Nonetheless, just moments before he had to leave, 
the Kmenu disappeared from my screen and will not reappear.  Kubuntu 
8.04 KDE 3.5.9 Desktop.  I set the Kmenu bar at the top of my screen.  I 
set it to only appear when I put the cursor in the upper left corner of 
the window; it would then drop down.  I was able, by right-clicking on 
the desktop, to get a 'find' option and typed in thunderbird and  my 
email client appeared.  I did the same with success with firefox, 
however when I attempted to open adept, my package manager, it would not 
open.  I was attempting to remove then reinstall the Kmenu package.  I 
am unable to open a terminal either, but even if able, I am too 
inexperienced to know what to type in to correct the problem.  Any ideas 
please? TIA

Steven