Thank you Laptop Nerd. I uninstalled webcam, and rebooted, and as you indicated it reinstalled the driver automatically and works perfectly now. I was a bit nervy about doing a System Restore, but not needed anyway this time. Thanks again my friend.
HI. I know it sounds stupid, but thank you, but I've been using the camera until a week ago, when it went fuzzy on me. It's as though the camera needs focussing.