And... I finally was able to find a picture of it. A nice one with hi-res.
It uses a FT245RL which is a USB to parallel converter. You can still get drivers for that for modern windows.
Follow this link to the manufacturer's page
FT245RL (NRND) - FTDI (ftdichip.com) and then follow the driver links. You will want the D2XX drivers and not the VCP drivers.
Here's a link to the picture:
IMG_2901.JPG (1600×1200) (joeyhagedorn.com)
Here is the picture:
The USB chip is the one closest to the USB connector.