Welcome to Disccussions, rasprenkle
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My quick look did not find any drivers, but as stated in the first link that the search returned,
http://en.wikipedia.org/wiki/ISight#iSightonWindows
a working external (Firewire) iSight should be auto-detected, at least by Vista.
Although I no longer use Windoze, I have seen reports in Apple Discussions that Windows will recognize the Firewire iSight's
camera. However, the microphone is different. I have never seen any verified report that Windows can connect to iSight's great microphone. While that may have changed in Vista or Win7, it seems to me that the only way to take full advantage of external iSight's full capability is to use it on a Firewire equipped Mac.
FWIW, while answering researching for this answer, I came across this blog that might be of interest:
http://retiredblog.gkaindl.com/2007/10/11/using-an-external-isight-on-a-windows- notebook/
If all else fails, the simpler approach may be to buy a Windows-compatible USB webcam. They come in great variety of prices (and features.)
EZ Jim
G5 DP 1.8GHz w/Mac OS X (10.5.7) PowerBook 1.67GHz (10.4.11) iBookSE 366MHz (10.3.9) External iSight
