By ppepote1

The Microsoft Office 2007 for failing to save the Excel spreadsheets with the extension XLSX, and is not compatible with earlier versions of Excel.

If you receive an email with a file extension XLSX and do not have the Office 2007. What do we do?

I do not know if there are other options open.


GOOGLE WINDOWS LINUX EASY FACILE FACIL
Use http://www.google.com/webhp and you will have access to all databases of google worldwide.
Explanation here:
http://ppepote1.blogspot.com/2008/12/searches-different-and-more-efficient.html
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Greetings