Use GMail to View Office 2007 .DOCX Files
When Office 2007 came out in late 2006, Word users were often surprised to see that their files created in the software were by default saved in the new .DOCX file format, which was unreadable by previous versions of Office. This caused many headaches in the corporate and end-user world, even though the default setting itself can be changed easily.
Google has now made it easy to view these files, even if you don’t have Office 2007. Simply email the offending .DOCX file to your Gmail account, open the message, and select View As HTML next to the attachment. You’ll be able to see the contents of the file, and do what you will with the text and whatnot.
Link: View Office Open XML files as HTML
