Precision M4400 and webcam

[illuminate]

I have a Dell Precision M4400 laptop. It's only 4 months old. It came loaded with XP business and I upgraded to Vista HP. On Monday I put Windows 7 Professional on it.

I didn't try the webcam in XP, or Vista, so I have never known if it works. But now I would like to start using it in Windows 7. I can't seem to find the right drivers online. And on the Dell site they don't have the drivers for it.
Does anyone have this laptop and know what types of drivers it uses? Or know what the issue would be?

Thanks for any help.