Soctt Gu has a blog post on this with MVC 3. Read it here..
Here's another video..
Hope you find this useful, especially the first link.
Rajesh Pillai, Mar 09, 2011
I created the aspnetdb (just restored the aspnetdb that came with dofactory package) and the Action DB on my Sql Server 2008 instance instead of express. I have included the web.config below. I ran profiler and the username and password are debbie and secret123 and I am not using a custom membership provider. Check original post to view the web.config
Oct 25, 2010