BTW, the only webcam you should buy is the 3Com Home Connect Webcam (NOT THE “LITE” ONE)
The image quality is sooo superior and the thing can see in the dark better than I can.
They’re about $120 new but this is on ebay at the moment: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2750716821
Note you will only find these on ebay or perhaps some overstock type companies. 3COM for some reason discontinued them. I have 3 of these camera and they are the best webcams/for the price I have seen. Quality pictures, excellent lighting tolerence and yes they can even see very well in a dimily lit room. They also have interchangable lenses.
FYI They were made by Vista ImagingVista Imaging . This links has some locations where they may still be found.
This link is directly to a reseller of the camera. They also have the lens pack.