
The release of Office 2007 marked Microsoft's first major default file shift since Office 97. This time around, Microsoft is offering a compatibility add-in that allows users of older versions of Office to read, edit and save word processor, spreadsheet and presentation documents in the Open XML formats new to Office 2007. Based on tests of <A HREF="http://www.eweek.com/article2/0,1759,2168948,00.asp?kc=EWKNLNAV081007STR2">the Microsoft Office Compatibility Pack,</A> Microsoft has done well in keeping its upward-compatibility promises.
The file conversion pack, released on June 18, is a free 27.5MB download for users of Office 2000, XP and 2003. During tests, the pack enabled seamless conversion between earlier and later versions of Office.