Microsoft Office 2007 (or 2007 Office System) uses a new XML based file formats and extensions for new documents, workbooks, spreadsheets or presentations that been created by Word 2007, Excel 2007 and PowerPoint 2007. These new file formats (in .docx, .xclx and .pptx extensions) are not backward-compatible, meaning older version of Office suites such as Office 2003, Office XP and Office 2000 cannot open and […]