Fun computer question! skype, etc

[i_heart_to_____]

Does anyone out there in the internets know the answer to this?

My friend just bought me a Macally Icecam (webcam)--it's (I think) the newest version, 2008.  I have a 2005 Mac ibook and Mac OSX 10.2.
It wont friggin work!  My computer is recognizing the camera, but I just get a black screen (as does the person I'm talking to on skype).

I tried:
reinstalling skype
checked all the video settings--they're ok
rebooting lots of times
resetting PRAM
various combinations of booting, rebooting, reloading skype, plugging in camera, etc etc
Downloading a thing call iUSBcam which I might supposedly need, but I'm not sure if it's actually being utilized when I open skype.

Any skype wizards know the answer to this?  So close to technological wonderment, yet so far!
I should note that a while ago my computer had video/display problems, but I think this was fixed the last time I took it in--not sure.

Thanks folks!

EDIT:  I figured it out!