The MacBook Pro internal iSight is working very well in Windows XP under Bootcamp. You have only to install the Apple driver (supplied with Boocamp).
It is working in MyComputer. You will see the drives and the camera. Once you click on the iSigth icon, Windows will display the image and you can even take a picture from Windows.
iSight is also working in MSN Messenger 7.5 (and probably a lot of other software).
Now to come back to Parallels, I have extracted the Apple iSight driver from Apple Bootcamp and installed it under Parallels Windows XP machine.
When I turn the connection on, using the menu from the USB button in the bottom right corner of the Parallels screen, the iSight is recognized by XP. In the device manager, it is reported as working device.
The only problem is for some obsure reason, it is automatically disconnected after 2 sec. and Windows is displaying the message as the USB device has been disconnected (and it will effectively disappear from Device Manager list).
What is even more strange is after 2 more sec. Windows will report the camera has connected again. (and it will reappear in the Device Manager list).
And this will switch on and off and on and off forever. (Parallels build 1922 and Mac OS X 10.4.8)
Looking for Parallels to keep the iSigth camera connected!
(now that the driver is available from Apple)
Luca