Ett annat sätt är att bara installera drivrutinerna från BootCamp. Det funkade felfritt för mig tidigare. Då får man dessutoms Apples senaste drivisar.
The easiest way to get iSight drivers is:
1. Download and install latest Apple Boot Camp from http://www.apple.com/macosx/bootcamp/
2. Browse to Macintosh HD->Applications->Utilities
3. Right-click the "Boot Camp Assistant" and select "Show Package Contents".
4. Go to Contents->Resources and click the DiskImage.dmg to mount it.
5. Find the "Install Macintosh Drivers for Windows XP.exe" and copy inside your VM.
6. Run the file. In a short while, all necessary drivers will be installed. Reboot and enjoy iSight