blisk wrote:Speaking of which I'm curious how you're supplying power to the cameras AND have them hooked up to the PC.
I don't think any Canon camera take power from the USB port. So you just have a USB cord plugged into the camera and AC power elsewhere in the camera. Canon AC adapters either have a separate port to plug into as this camera seems to have or they take an adapter kit that sort of replaces the battery in the compartment. If you google for a particular Canon model and add "AC adapter" you can find the right model. unbelift has just been clever enough to build his own AC adapter.
If you want to control your camera from a computer the way unbelift is you need to choose one that has remote operation capabilities. You can either do that with gphoto on Linux, or by buying remote capture software. I've never tried it, but libgphoto is available for Windows, so I suppose that means you could use it there as well. In this thread: viewtopic.php?f=1&t=381&p=3637&hilit=capture+software#p3637
Tony linked to: http://www.breezesys.com/MultiCamera/psr_index.htm
as software for Windows to control cameras remotely. He mentioned $95 per camera licensing.
I decided to search for high resolution cameras that support remote operation, and the bad news is the affordable options are diminishing. Canon has removed the capability from all of their newer Powershot (cheaper) cameras, so finding a 10 megapixel or more camera that is cheap and operable remotely is quite a feat. I'll try to post the results of my search when I have it a bit more complete. For starters, gphoto's compatible list and a bit of instructions are here: http://gphoto.sourceforge.net/doc/remote/