Packard Bell never shipped this notebook with Windows 7 installed, hence it's an unsupported Operating System. It came with Vista installed so that's the only OS that drivers are available for.
If you care to post the hardware id string (available in Device Manager), I'll see what I can find.
This is the only published driver that I could find:
USB 2.0 Webcam Driver for Packard Bell Easynote MZ36