missing mouse cursor

Have loaded Suse 9.2 with KDE desktop on Compaq R3240 laptop. The unit spends most of its time as a desktop hooked up to a remote 19" monitor and keyboard and mouse. The mouse appears and operates as normal on the laptop screen but does not appear on the remote (desktop) monitor. It functions on both screens as normal in all other ways, ie: buttons highlight when covered etc. You just can't see the mouse on the remote screen. How to fix this? I'm a user level guy and really stumped. Brock