Howto add new window manager to kdm

I have installed XFce4 and Fluxbox and I have upgraded Gnome to 2.6 but I cant find were to add new window managers to KDM I have tried adding to /opt/kde3/share/config/kdm/kdmrc but no change. XFce4,Fluxbox and Gnome 2.6 all work if I start them from the CI Any help here please Dave ----------------------------------------------------------------------------------------------------- Being alone means to much time to think about shit