Unlike in Word 2010, older versions of Microsoft Office aren’t able to read or edit OpenOffice.org ODT formatted documents. To get around this problem all we need to do is change our ODT files into readable DOC files. And, to do that we can use a free built-in program that came pre-packaged with Windows.
Note: Office 2010 by default supports .odt format, so this is only useful if you are running 2007, 2003, or an even older version.
Right-Click the .odt file that you would like to convert and Select Open with > WordPad.*
*If WordPad does not appear on this list you can still use it from the Choose default program menu.
Now that the file is open in WordPad, Click the File menu to the left of the Home tab. From the menu list Select Save as > Office Open XML document. Now, name your file as you see fit to whatever location you like.
Your file should now be in the .docx format and readable by any version of Microsoft Office Word. I like this solution because it is simple and doesn’t require installing any additional software to convert your OpenOffice.org documents.