Thanks for the idea. Yeah, I could do that. In fact, on several
applications, I have. If a workbook is open, it uses that as the input. If
no other workbook is open, it asks the user to select their input workbook.

Maybe it's just my concept of change in this area that's out of whack. This
whole thing started almost 10 months ago, and I had the first demo/cut done
pretty quickly... Think maybe it's just my head that's gotten too attached to
the existing form.

But anyway, after the sheet with the input parameters is selected, the rest
of the coding change is easy... the code uses 5 range variables which define
where the inputs are. It's written so that one set of inputs can kick of
multiple loops and in the end compare the whole bunch, if that's what the
user wants.

But anyway, changing the input is easy... just change the assignments on the
controlling range variables.

Thanks for the continued suggestion.