Changing from .docx to .doc in Word 2007

For those of you running into compatibility problems with the new .docx format of Word 2007, you can set the default format back to .doc (Word 2003)
http://www.ejabs.com/blog/2007/03/change-word-2007-default-saving-format-to-compatibility-mode/
You will have to scroll past the complaints against Microsoft.