Stumbled upon this solution. Edit your job as Wide Screen then export job to DVD-A WS video stream/AC3. Make the DVD. Go into the DVD player set up menu and tell it you have a 4:3 television. Play the DVD and record the cleanly letterboxed 16:9 back to tape via S-Video, component or composite. Simple, easy and effective. Beats using Boris Red or a harware aspect ratio converter. The image is great, just like you would see on your TV with a rented DVD played through s-video.
Peter