This is super old-school and likely no one has any use for it anymore, but I once mirrored the Kensington VideoCAM webcam Windows 2000/XP drivers from this site, which are no longer available online:
The Unofficial Source for Kensington VideoCAM Support
By Orson Teodoro [horsie619@aol.com]
http://www.geocities.com/trypt0/videocamsupport.html
The text of the website itself is available on the Wayback Machine, but the driver files are not. So here are the files I have, including a mirror of the original directions and driver list. Links to driver files I didn’t mirror are struck through. (Sorry.)