First, un-install the problem
Sorry, just kidding
If you right-click the KDE menu button, you can choose 'Menu Editor'. Here you can add new progams to the KDE menu. Just point to the executable in the 'Command'-tab and assign a name and icon. If you would like to have it in the taskbar as well, right click the taskbar and select 'Add to panel' -> 'Application' -> 'your application'
