how to change your webcam so it can see in the dark. The CCDs of all digital cameras are responsive to infrared light (IR) as well as visible light. However, most webcams come with a filter installed to block out IR light. This makes the image less washed out but it keeps you from being able to see in the dark (using IR illumination). This intructable shows you how to remove the filter from a "Logitech quickcam chat". Removing the filter from other webcams will probably be a bit easier, but they all follow the same procedure.
This is where I first learned you could do this:http://www.hoagieshouse.com/IR/