0 Know How To: Open Office 2007 files into Office 2003 With Microsoft Compatibility Pack

All programs in Office 2003 uses the old file extensions because of this, the compatibility issue occurs. For Example Excel 2003 contains .xls and Word 2003 saves files with extension .doc and PowerPoint with .ppt file extension. While the Office2007 uses the new file extension for its different programs. Like Excel 2007 contains .xlsx and Word 2007 saves files with extension .docx and PowerPoint with .pptx file extension. So, the problem comes when you tries to open the Office 2007 files into Office 2003 and you will bot be able to open the file due to the compatibility issue between both Office versions.