If you want the compviz effects you have in kde to work in kde as well, then google with the terms: cool solutions suse compiz xgl kde
If it is the kde window transparency effects you want then add
Option "Composite" "on"
to xorg.conf and enable effects in kde. You can access the configuration by right clicking on a kde window border or through KMenu -> Personal Settings -> Desktop -> Window Behavior -> Translucency.
However, I've found that this slows down performance to an unacceptable level.