kde xdisplay problem

[Martin Wegmann <mailinglist.wegmann@web.de>]

Hello, 

I am running KDE 3.0.3 but when I try to change my display settings via 
Control Center -> Peripherals -> Xdisplay the cursor starts flashing but 
nothing happens. 
What might be wrong? or how do I change my settings otherwise?

thanks in advance, cheers Martin