what 64 bit is compared to 32 bit and it seems there is more software for 32 bit, and my 64 bit cruhed when i put a web cam that was for 32 bit, I found out after it crashed and gave me the blue screen of death it was Dell computer, they replaced it.
Look for 64-bit drivers for the webcam... all major manufacturers will have them available (Logitech, Creative, etc). If you bought a bargain basement webcam, then you might be out of luck when it comes to 64-bit drivers. If you have a 64-bit OS, then you MUST install 64-bit drivers. Never, EVER download 32-bit drivers.