I got some files. Those are word files. First when I tried to open them on Word it gave me error saying not a valid file. I found that the file is saved in Word 2007. The extension is docx. I am trying to find out some possible ways by which I can open them on Office 2003. I tried to locate a set of tools that allows me to view the file but I cannot modify it. I am sure Microsoft might be having some kind of update pack that can allow me to edit and save Office 2007 files in Office 2003.