Adding User Name to footer
 

I have spreadsheets that go out to a number of users, and they make various
changes and print out for themselves. The problems is that no-one knows
which version to pick up from a central printer. Can I add the user name to
the footer. I also have the path and file in the same area. I would like to
end up with :

User Name printed 'path/file' on 'date'