ok,
if any ones interested, I can't find a native way of capturing, only the SU window and the current cursor, so I used the QuickTime movie and did screen grabs from it...
push-pull.png
circle.png
finale.png
my conclusions, is that it's not doable directly with native tools, but a qt movie and then a screen grab from that using grab, screencapture or other is easier...
john