Multiple Submit Buttons

I'm creating a form in which I ask people to choose the payment method. If they choose credit card, it takes them to paypal to complete transaction, if they choose by check, they submit the form and it takes them directly to the thank you page with information on how to send the check.  I can't figure out how to do this because when I added a second submit button, it still takes you to paypal. 

Great, that worked. Thanks