Redirect to custom URL after adding to cart

Hi there,
When someone clicks on my BUY button, they are currently being redirected to the cart using

What I want is to set it to go to a non-cart page, where they are shown new options for what they can add to their order. How do I do this?

Thanks!
~Lucy
Here’s the site: http://www.tinytreasurehunts.com

http://wordpress.org/extend/plugins/woocommerce/