Open, edit, and save documents, workbooks, and presentations in the Open XML file formats, which were introduced to Microsoft Office Word, Excel, and PowerPoint beginning with Office 2007 and continuing with Office 2010. Users of the Microsoft Office XP and 2003 programs Word, Excel, or PowerPoint -please install all High-Priority updates from Microsoft Update before downloading the Compatibility Pack. By installing the Compatibility Pack in addition to Microsoft Office 2000, Office XP, or Office 2003, you will be able to open, edit, and save files using the file formats in newer versions of Word, Excel, and PowerPoint . The Compatibility Pack can also be used in conjunction with the Microsoft Office Word Viewer 2003, Excel Viewer 2003, and PowerPoint Viewer 2003 to view files saved in these new formats. For more information about the Compatibility Pack, see 924074. Note: If you use Microsoft Word 2000 or Microsoft Word 2002 to read or write documents containing complex scripts, please see 925451 for information to enable newer versions of Word documents to be displayed correctly in your version of Word. Administrators: The administrative template for the Word, Excel, and PowerPoint converters contained within the Compatibility Pack is available for download. Update: The Microsoft Office Compatibility Pack has been updated to include SP2. Additionally, with the updated Compatibility Pack, if .DOCX or .DOCM files contain custom XML tags, those tags are removed when the file is opened in Word 2003. For more information, please see KB978951