this is my solution for webcam SONY VAIO VGNFZ21M - VGN-FZ21Mftp://ftp.vaio-link.com/PUB/Vaio/Original/FZ21_Drivers.zip
First, you have to uninstall the cam.
The correct driver for my webcam was in this folder: Camera Driver (Ricoh) 6..211F - 6.1004.211.0_logo
The webcam is OK!
You have to see this in hardware:
Sony Visual Communication Camera VGP-VCC8