When I add a custom menu item using the Add method I know
I can make it temporary by setting the Temporary property
to True. This is good because I know when my Excel
Application Unloads that is it, they don't show up in
other workbooks.

I need to make some custom changes to Excel Menus (not
custom) though like setting the .OnAction property for
the "EditDelete Sheet" option to point to my own code. I
know how to do this but it affects not only my own
application but also all other spreadsheets that are
opened. I know I can use the Reset method when I close
the application but if for some reason it crashes and the
reset is run there is potential for sheets other sheets to
be affected and passed around and before you know it.....a
mess!!

So how can I make the change temporary to begin with? Is
it possible?

Thanks in advance!
RJ