Sean, just in case I don't get back to you in a hurry I tracked down the software at the ABC Homepage - it shouldn't be too hard to find the URL and a quick text search on the page will find 'dulcimer' very quickly. Its a DOS program (not one of my strengths) and from what I can gather it needs to be run from the DOS prompt. I tried to follow the sundry commands from the instructions file but I couldn't get it to create a TAB file for me.
Either it needs to be run from pure DOS (not Windows DOS) or a DOS expert (say Dick Greenhaus) needs to have a look at the DOS commands. I found the instructions quite ambiguous, but I suspect that a DOS person would find them straight forward.
Hope this helps. Regards, John