Is it possible to create a macro in one instance of excel to call/elecute
another macro in another instance of excel??

Say the first instance macro is first_instance.xls!macro1 and the second
instance macro is second_instance.xls!macro2. Both files are on the desktop
of one machine.

The two macros are outside each other's scope, but is it possible to call
one from the other anyway???

What would the calling code line say?