[PD] pix_video camera trouble

[Jon]

hi
i want to use a usb microscope with GEM. with the macam driver
installed, my macbook is able to get video from it on imovie, but i
havent succeeded in forcing pix_video to get video from this cam
instead of the built in isight. i have tried [dialog( but it only lets
me select isight (and both DV Video and IIDC FireWire Video are grayed
out). what other things should i try to make this work?
thanks!