MS Text to Speech

I have a little program that I have designed for my 5 year old cousin that helps him with his math. It uses the MS Text to Speech engine to read message boxes and such to him. The only problem is when it is not speaking, it's mouth is wide open. Does anyone know a way to keep it's mouth shut??

Thanks.

Are you referring to MS Agent by anyhow? If yes then one of its properties (can recall it - it's been awhile since I used it) will take care of this.