Dell Webcam Driver I Have Windows 7, And Can't Find Driver For Webcam On My Dell Insprion 1420?

I have Windows 7, and can't find driver for webcam on my Dell Insprion 1420? - dell webcam driver

I did an upgrade from Vista to 7, and I accidentally deleted all my system drivers. So, now I can not have a driver works for my webcam. I have downloaded, such as 4-driver, not the work. Please someone can help