My landlord loaned me & the g/f a webcam to use for Skype: however, it was also an attempted prank, as it is the discontinued iSight external webcam. Fortunately Windows 7 does recognize it as a "generic" camera, and while that alone doesn't work, it did inspire me to hunt for other Firewire drivers that might.
1. Have Firewire port installed on computer.
2. Download the Unibrain ubCore driver suite (don't need the Fire-i download).
3. Install the driver suite as "complete". Reboot if you feel inclined to.
4. Attach camera: you'll get notifications of unsupported hardware, but the necessary drivers for video will have been installed & show up as a Unibrain camera in "Devices & Printers".