I'm using Office 2007, but I'm saving in the old formats (.doc, .xls, etc.)
because not everyone at our site has the new version of office. Every time I
try to save & close a password protected document, I receive the following
message:

This document is both encrypted and password protected. The Office Open XML
Formats available in the 2007 release provide stronger excryption. Do you
want to increase the security of this document by converting to an Office
Open XML Format?

Is there any way to turn this off? It is extremely annoying and I don't want
to use it.
Thanks.