Your computer must have a Firewire input port
If it doesn't you can obtain a FireWire PCI card at very low cost (less than $12) from stores such as Amazon. You will also need a Firewire cable (less than $5) to attach the camcorder to the FireWire port on your computer, or perhaps your camcorder already has a Firewire cable, in which case Happy Days!
Next you need to download and install the software tool: DVDriver
Search for 'DVDriver'
This piece of software lets you use your camcorder with any software that works with webcams (including RightBooth). It works by fooling Windows into thinking that your camcorder is just an ordinary USB webcam. We've not tested this software, but we know of people using it successfully on their computers.
And that's really all there is to it
Once all the above conditions are met, the DVDriver should appear for selection in the Webcam list within the RightBooth Video settings. Select DVDriver from the Webcam list and you are good to go.
Whilst we have not tried this configuration ourselves we know of RightBooth users who have connected a camcorder this way, and they report that it produces really great video recordings.