I purchased a 7-in-1 USB cardreader specifically to read SmartMedia cards from my QuickTake 200. The reader will read 3.3v cards but NOT the 5v cards the QuickTake uses.
The QuickTake software must run under Classic on a Mac, but I believe it will work if you have a real serial port or a USB-to-serial converter. I've done this before, I think. The software exists for the PC/Windows, as well.
Also worth noting that the Fuji DS-7 is the same as the QuickTake.
You can see a gallery of images I took with my QuickTake back in 1998 here:
http://pix.blakespot.com/view/trips/sanfrancisco_98/
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