Hi Jim,
That's why I like Lombardi/BPM where I can design executable BPMN2 models and run them with a single click. I've heard there're products where you model first and you need to export the model to deploy it onto a runtime environment which is often a separate product from another company. I think ARIS sells such a product.
Disclaimer: Please note that I work for IBM and after 6 years I found myself enjoying most WebSphere products
Jacek