Originally Posted by
redburgundy
I see that it also says:
Note that docx files that are encrypted using Office 2007 are unable to be read by Office 2003 even if the compatibility pack is installed.
In order to encrypt a document in Office 2007 so that it can be read using Office 2003 the document mus first be protected using the Prepare -> Encrypt Document procedure described above. However, the document must then be saved using the Save As -> Word 97-2003 Document option.
Hmmm...missed that part.
Since the OP wants to work the document on both systems it is a moot point anyways.