gimp script-fu

trying to do a bit of batch processing with gimp.
wasn't easy to get started with that.
tried to get script-fu-drop-shadow working from the console first.
this did the trick:
(script-fu-drop-shadow 1 2 8 8 15 '(0 0 0) 80 TRUE)
no RUN-NONINTERACTIVE or anything ...
the 1 is the image id ( it is shown in the info window after the file name)
the 2 is the layer id ( shown in the layer dialog - edit layer attributes after the name)
the console batch script: coming soon