Dictionary And Word Of The Screensaver- Changes Possible?

Hello-

Would like to have the Word of The Day Screen Saver only display certain words. Is this possible?

If it has to be pointed at a specific dictionary, anyone know how to create a new or adjust a dictionary in Snow Leopard so I can point WOTD screen saver towards it?

Thanks! Would be kind cool to have custom words as a screen saver.
- Mr. Bill