I get asked this question quite often, so I thought I would point out the download location for the tool to make files work between Office 2000, XP, 2003 and 2007. Just to cover off some details - Office 2007 can save in Office 97-2003 file format as well as the new Open XML and PDF file formats. Using this download, files can be opened and saved in Office 2007 format in Office 2000 and later. Of special note is that if you are using Microsoft Office XP or 2003 you MUST install all High-Priority updates from Microsoft Update before downloading the Compatibility Pack . Also, if you don't have those Office programs, but you have the viewers (Microsoft Office Word Viewer 2003, Excel Viewer 2003, and PowerPoint Viewer 2003) then you can use the pack to view files saved in these new formats. For more information about the Compatibility Pack, see Knowledge Base article 924074 . Also Note: If you use Microsoft Word 2000 or Microsoft Word 2002 to read or write documents containing complex scripts, please see http://support...