Are you trying to insert Word 2007 page numbering and have no option in the sub menu?
You were running Word 2007 beta right….
Here is the fix:
Click on the Start Button, select Run
Type the following: “%appdata%MicrosoftDocument Building Blocks”
This will open a folder and in it you will see a 1033 folder. In this you will see the “Building Blocks.dotx”.
Delete that file. Rerun word, and all will be ok!