It would be nice if Kontact works like Amarok does: You can maximize/minimize the window, but if you don't want to see Kontact in the panel you can close the windows but Kontact is still working on your system tray.
July 1st 2008:
Never mind. KDocker was the solution. :P
July 1st 2008:
Never mind. KDocker was the solution. :P