did you see the second post there. from the bottom? Michelle points out that the:closing tag is not recognized in 2007. I guess that's true. I did a short test, and the other tag works fine. Use this in your memo field:
Code:
<customUI xmlns="http://schemas.microsoft.com/office/2006/01/customui">
<ribbon startFromScratch="true">
</ribbon>
</customUI>
also, be aware that this will do nothing for you if you don't turn off the SHIFT shortcut key as well. with it on, people can bypass this custom ribbon as well.