Hello,
File compatibility isn't a problem because Microsoft Office 2007 can open files from previous versions of Office, and can also save files in the 'old' format so that they are compatible with older versions of Microsoft Office.
For example, when using Microsoft Word 2007, instead of saving the document as a
.docx document (which is the new, Word 2007 format), you can save the document in the old document format instead, which is
.doc.
When saving a file in any Microsoft Office 2007 application, make sure you choose to save using the format compatible with
97-2003 Office versions: