Open any folder and go to the folder drop down menu's - choose tools -then
folder options - then click on the view tab.
Now make sure hide extensions of known file types is unchecked.
All your files will now show their extensions like this:
My Letter (original)
My letter.doc (with extension)
FEMautomatcher.xlsm now needs to be changed, so choose re-name and get rid of the m at the end.
Make sure you change the hide extensions of known file types back when you are finished.
Sometimes I think I know everything......then I wake up.