How do I do unit & integration testing in a BDD style in ASP.NET MVC?

Question

I am learning Behavior Driven Development with ASP.NET MVC and, based on a post from Steve Sanderson, understand that BDD can mean, at least, the following test types: individual units of code & UI interactions. Something similar is mentioned in this post. Do I need two different test frameworks if I want both unit and integration testing?

• Unit testing repositories, controllers, & services using a context/specification framework, like MSpec. The results of testing with this will be useful to the development team.

• Testing complete behaviors (integration) using a given/when/then framework, like SpecFlow with Watin. The results of this testing will be useful for my client.

The videos I have seen so far on using BDD have only been limited to testing the behaviour of entities without testing the behaviour of repositories, controllers, etc... Is there a sample project where I can see both automated Unit and Integration testing using a BDD approach?