I found this in the Support area.... This might help some of you. I am going to try it in the future, but I have other things that are more important at this time... Let me know if this works for you?
DesertFalcon
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My iSight doesn't work on Parallels Desktop for Mac.
To solve the iSight problem please follow these steps:
Install BootCamp drivers:
Download and install the latest Apple Boot Camp from
http://www.apple.com/macosx/bootcamp/
Open Macintosh HD - Applications - Utilities
Mark Boot Camp Assistant, choose Show Package Contents from the Action menu.
Go to Contents - Resources and click DiskImage.dmg to mount it.
Find the iSightInstaller.exe file and copy it to your VM.
Shut down (do not restart) your Parallels VM and turn off the Mac.
Turn on your Mac and start your Parallels virtual machine.
Choose USB from the Devices menu and select Built-In iSight.
Allow your Windows OS to install the iSight drivers.
Turn off the Built-in iSight mode in the Devices menu and then select it again
Turn off the Built-in iSight mode in the Devices menu again if you want the camera to be used in your OS X.
Click to expand...