Google Docs now supports the upload of .docx and .xlsx file formats.

Editions included:
Standard, Premier, Education, Team and Partner Editions

Languages included:
All languages supported by Google Docs

How to access what's new:
To import a .docx or .xlsx file into Google Docs, click the 'Upload' button from the Google Docs List menu, select your file, and click the 'Upload File' button.

For more information:
http://googledocs.blogspot.com/2009/06/file-formats-keep-on-coming-announcing.html

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