lost part of shell screen

Hi,
I've been using the KDE shell in Red-hat Enterprise Linux for some time with
TightVNC. Today, I installed GFTP and changed my screen background to one of
the built-in ones. Now I have lost the line at the top that contains:
Applications     System and all my launcher icons
 
Does anyone have any hints as to what I might have done wrong and how I can
get this line back?
 
Thanks in advance for any help.
DocDJ

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