I want to (as part of my XLA addin in he XLStart folder) have an icon
appear automatically on the toolbar to run a function within that
project.

I am hoping to be able to present a single xla file to be copied in the
xlstart folder, that will basically keep the end users from doing
anything other then clicking on the icon it creates.

Any other information/suggestions/comments (outside the specific
question) is also very welcome.