3rd Party iSight programs?

I just bought an iSight for my iBook and was disappointed to find out that the Apple program photobooth only comes on iMacs with an iSight already installed. Since it's apparently illegal to get the Apple version of photobooth, I was wondering if anyone knows of any third party programs for capturing photos with an iSight. So far I've only been able to find WebCam Tweaker (http://www.tweakersoft.com/webcamtweaker.html), but that comes with a $15 price tag. Does anyone else know of any other programs, preferably shareware?