Hi Grant,
This
page says it has a Note (1) on the USB Video Class info that it only applies to Windows XP Service Pack 2
This
Page at Ecamm for their camera guide does not even mention it. (it may be a new version and the list is not exhaustive).
I can not see it comes with an On/Off Switch - although it can be twsited into a "Down" Position to be Off. It would be worth checking this.
Does it show up in her System Profiler ?
The Blue apple icon > About this Mac > More Info Button
Click on the Hardware reveal triangle > USB
If it is truly UVC compliant then it should work.
1:53 PM Friday; September 7, 2007