[root@home ~]# echo "DESKTOP=KDE" > /etc/sysconfig/desktop
[root@home ~]# echo "DISPLAYMANAGER=KDE" >> /etc/sysconfig/desktop
[root@home ~]# cat  /etc/sysconfig/desktop
DESKTOP="KDE"
DISPLAYMANAGER=KDE

# Run preferred X display manager
preferred=
if [ -f /etc/sysconfig/desktop ]; then
	. /etc/sysconfig/desktop
	if [ "$DISPLAYMANAGER" = GNOME ]; then
		preferred=/usr/sbin/gdm
	elif [ "$DISPLAYMANAGER" = KDE ]; then
		preferred=/usr/bin/kdm
	elif [ "$DISPLAYMANAGER" = WDM ]; then
		preferred=/usr/bin/wdm
	elif [ "$DISPLAYMANAGER" = XDM ]; then
	        preferred=/usr/bin/xdm
        elif [ -n "$DISPLAYMANAGER" ]; then
		preferred=$DISPLAYMANAGER
	fi