Thanks, Brady. I plan to follow your advice. The confusion I had earlier about what a USB2Serial converter actually is has been cleared up in the meantime. I've opened the controller box, pulled the old converter and confirmed that it is an alien body in my Bot. The guys at ShopBot have never seen it. I found a website from info on the chip and downloaded their driver - same old results.
Thanks, again. It's fun being part of this forum. Starting a totally new career and line of work at age 59 has been an uphill struggle, but the challenge has been refreshing - and I hope it will be rewarding.
Mike
MasterPeace Artisans
ShopBot PRT96 with a V4g
VCarve Pro
Cut3D
TouchCAD