A way to have sent messages automatically go to outbox for Samsung Intensity phone?

i have a samsung intensity phone and i want to change the settings so that whenever i send a text message, i don't always have to answer whether or not i want to save the message to my outbox. Does anyone know how to make it so that my messages automatically go to my outbox?|||First go to the messaging menu and then select settings and there should be an option that says "auto save sent" and make sure its on "on" instead of "prompt."