list of supported camera's / webcams ...

is there a list of supported cameras or webcams? I cannot find this.
somehow I thought that ichat that goes with osx 10.6 supports almost all camera's?
I have an old logitech camera and I cannot get it to work. Now Ithought of buying some other (pref. cheap) webcam, but before I do that, I want to find out whether or not it is supported

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Orignal From: list of supported camera's / webcams ...