Hi Nigel,
I've tried to open them in DOS. All that happens is, a screen full of words opens for about one second, then closes again before I can even pick up what it's telling me. I did it about a dozen times and made out the words: "Switch and parameter for rcd.exe. Type in rcd? for more details." But of course, by the time I even think about typing something in, the screen has closed. The thing will do nothing.
Thanks again
Tony