FYI:
nVidia released a new driver a few weeks ago which, based on their documention, seems pretty incredible. I'm trying it out right now because I thought it might solve a problem I was having rendering GEMwindow on a secondary display. In any case, it seems worth the upgrade.
I went looking for a driver update because I couldn't figure out why my GEMwin wouldn't display all my cool video and eyecandy on my secondary display...then I found a note in the pd-list archive written by Andre S. a few months ago:
"and remember, when using 2 cards on windows, only card1 (primary display) uses directX/openGL"
ahhhh....NOW it all makes sense.
Thanks Andre, Regards, Dave Sabine.