Updated: 2006-11-16
To meet the needs of users upgrading to the 2007 Microsoft Office system, Microsoft offers updates and a compatibility pack for Office XP and Office 2003 that enable a user to open and save 2007 Office release XML files.
Microsoft Office Compatibility Pack deployment
For installation instructions for the Microsoft Office Compatibility pack, see Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats (http://go.microsoft.com/fwlink?LinkID=77512). This site guides you through installing appropriate updates and the Microsoft Office Compatibility Pack.