Thanks a bunch to you both! I took a quick look around at the web sites and features for both Power tab and Guitar Pro. Think I'm going to give Guitar Pro a try- it looks like it has lots of features I need and great explanations of how to do things. (I sure hope that's the case - it's the assumed tech knowledge & lack of clear instructions on how to do a task that has been frustrating to me with many of the music software programs.) Also, it looks like it will let me import files created in Power Tab and other programs, and export Wav files, which I assume I could then import to audio editing programs.

I sure do appreciate your help!