http://social.technet.microsoft.com/Forums/en-US/itprovistahardware/thread/9168a111-a4b4-4a46-adc4-5f5655fc7870
This link will solve your webcam driver poblems!
In short!
ftp://download.sony.com/US/pc/RIDCAM-14074500-US.EXE
Download RIDCAM-14074500-US.exe from SONY support site;
- From a command line, executed "RIDCAM-14074500-US.exe /x ." to extract files from driver installer;
** If you try to install the driver from device manager, it will fail with a file not found message. I looked at system events to detect what file was missing and I realized there was an attempt to copy files from "English" folder: wich was missing from extracted files.
- Create a folder named "English" at the place you extracted the files of driver installer, then copy all driver files into it. (Yes, double it!)
- Go to the device manager and update your camera driver, pointing to the root driver path (that with the "English" subdir).
Perhaps you have to change the "English" folder name to another acording to your language. Look at system events log to find out.
The driver provided by Sony has support to x64 Vista, but the installer does not work correctly. Workaround...