Article on “Using Java to Crack Office 2007”
There is an article up on InfoQ showing how you can use Java to work with the Open XML formats.
Go ahead and take a look: http://www.infoq.com/articles/cracking-office-2007-with-java
While the title of the article says Office 2007, you all know that Open XML is also supported in older versions of Office, as well as a number of other non-Microsoft applications. So this article can help beyond just Office 2007. J