I forgot to mention that, because of the "under Windows" capability, I prefer Don's TU58 simulator. And I also forgot to mention the great help I got from Don, while trying to get it working! His help was so good that the TU58 simulator *should* have worked. I moved on, to return to it later, after my view was cleared. I guess, now is the time :-) I know, if you spend too much time too long on a problem, you develop a kind of blindness to solve the problem. Leaving and returning later often helps ...