Yep, I use a laptop.
You can use any printer port. My lappy has the correct Parallel port, but if you have 2 USB ports, try them.
If you are getting a black screen in Desire it could be a lot of things causing it.
Too low in Brightness, too low in Gamma, etc.
Try this:
Exposure seconds - 1
Number of Exposures - 1000
Then click 'Start'.
While the frames are happily clicking away play with focus on the Toucam, and levels in Desire.
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