104445 aMember/1shoppingcart Setup

We are selling a digital download product and we need 1shoppingcart and aMember set up to communicate so that each buyer has access to the digital download product through aMember. We already have aMember installed on the domain and a 1shoppingcart account with the knowledge of how to set up a product page, but we've never used aMember before and don't know how to configure it.