Guess I'm to reply in this window - hope I have it right. I tried a reinstall with a wired mouse, did not good. But interestingly, when I hit various combinations of "F", Caps and Numeral lock on the remote relay device from the MS wireless keyboard/mouse assembly, I always get a combination (constantly varying) of keys that will allow me the right click function.
I regret that I had so much confidence in this that I didn't ensure my Restore Point had been established, and having just done a defrag, that was deactivated.
I'm ok for now though, and appreciate the input from all. I'll be more prepared next time I attempt to install freeware.
Paul