Marketpress Theming - How Do I Show A Product List of The Category Selected In the Previous Page?

Hello,

I'm doing my own Marketpress theme and I'm stuck on the following:

On my store page, there is a categories dropdown menu. When a user selects the category I need them taken to a page which lists the products in the category that they selected only.

So far, I have created a mp_category page, but what is the exact template function I need to place in that page to show products only in the category the user selected?

Also, what code do I need to place in the page title area to echo the Category title?

Thanks as always!

AC