[Plugin: wp-oscommerce] Display products in specific category

Can anyone tell me how to display the products in a category.

I need a widget that shows all products in a specific category (sharing the same name as a WordPress Page).

I was able to do it in WP-Ecommerce (http://beatrouterecords.co.uk/artists/john-mckeown/), but my client needs the store to integrate with WorldPay – that’s why I’ve switched to WP-osCommerce instead.