I have a web app setup with Simple Membership and Entity Framework Code first Migrations. I would like to create a POCO class that has a many-to-many relationship with the webpages_roles table in the database. It appears as though that table is created in the back end and not created with a std. EF POCO class.
Good tutorial here that shows how to make the Simple Membership tables part of your entity data model. May put you in the right direction.