Android :: Starting Market Application Programmatically

Is this possible? I have a free and a paid version of an application. From the FREE version I want to provide the ability to for the user to "PURCHASE" the paid version. I want to make it as simple as possible. I am thinking of Starting the market app and passing the identification of the PAID so that the Market app will take them right there. I am trying to make it as easy as posible. No searching etc. No I have no intent of doing the purchasing from within my app. I want to have them press [Get Paid Now] button and then I start the Market app which would then take them to my Paid Application in the store.