Places to look for help identifying what chipset your webcam has / what driver it needs

http://www.gold-software.com/UnknownDeviceIdentifier-review12752.htm

or

http://www.driver-updates.net/?k=Webcams%20Drivers%20Updates

This downloads the free DriverDetective.exe from http://downloads.driver.shq.com

or you can download DriverDetective.exe  here
 

Take a look here for Support for Chips(**): Sunplus, Z-star/Vimicro, Sonix, Etoms, Conexant, IcMedia/TransVision, Pixart

http://mxhaard.free.fr/spca5xx.html

Additional info on DRIVERLESS chipsets from Pico Instruments

http://www.picoinstruments.com/consumer_electronics.htm
 

Mac Users can also look here - this guy is tireless in seeking out additional chipset info - updated frequently

WebCamera driver to work with OSX

http://webcam-osx.sourceforge.net/downloads.html

WebCamera List with chipset info

http://webcam-osx.sourceforge.net/cameras/index.php