Apologies to the OP for the off topic, but I was able to install the conversion add-on to Word and am now able to pretty much open the Wordstar files and save them as docx and txt files .... and in so doing it has put me in a very weird place seeing some of my writing from 20 years ago and knowing all the changes that were in store for me..
I started a new thread here:
https://www.mobileread.com/forums/showthread.php?t=74518
Anyone else experience this? Please feel free to share in this thread.