If I say:
If Len(Dir(Application.Path & "\" & "abc.exe")) _
= 0 Then
Exit Sub
Else
etc
End If

Can I reliably assume that Exit Sub will only occur if the file 'abc.exe' is
not found in the Office-installed path?
....not a trick question, just wish to know what I can be sure of, if I make
the statement.

Regards.