Tried ebay and Amazon... I followed a suggestion to try https://. They had a cable listed as " USB Cat & programming cable with linear PTT out for Yaesu FT-100 FT-817 FT-857 FT-897". It will take awhile to receive it, but it should tak care of the amp and rig control.
Thanks to all for giving me a direction to try.
73 DE AG4KN? John
AG4KN- John Davis