Where and when? Did it work before? Could you be a bit more verbose, please? ;) 
 
Thank you, 
Jan 

There has been a similar problem when installing Openoffice.org 2.0.2 on 
Opensuse 10.0 with KDE 3.5.1. I have deinstalled 2.0.1. Then installed the 
2.0.2 rpms together with the suse-menues desktop-integration file.

After installation the KDE-Menue only contains the entry "Openoffice.org 
2.0 Calc". And, while KDE Control Center > File Associations still does 
know about associating *.sxw and *. odt etc to Writer etc, attachments are 
not opened by Writer. In fact, the menue which opens doesn't allow to 
select Writer from the new menu since it isn't in the main KDE-menu. 

To solve this problem: > rightclick on KDE menu button > select menu editor 
> go to Openoffice.org 2.0 Calc > in command, delete -calc so that it 
contains "openoffice.org-2.0 %U" only.

And everything jumps into right place: All OO.org modules are back in the KDE 
menue again, and Kmail allows opening an attachment in Writer etc etc. However 
the program descriptions are in German while I installed the English version 
of OO.org 2.0.

After that go back to the KDE menu editor and add -calc back to the 
Openoffice 1.0 Calc command line.

On users list a similar problem has been reported. There it has been connected
with new environment variable settings in KDE. Details here:

http://www.openoffice.org/servlets/ReadMsg?list=users&msgNo=116720