ASP.Net MVC3 uses Entity Framework 4. Advantage first introduced support for Entity Famework 4 in version 10.
With versions prior to 10, a 'database-first' approach will work. To do a database first approach, add an "ADO.Net Entity Data Model" in the model folder and generate from the database. Once the model is created be sure to "Build" the project. Once built, add the controller and attach it to the table in the model.
With versions 10+, the database first option as stated above will work, or it can be implement using the code-first approach. For code-first approaches, an additional line of code is needed. Add a line defining the schema name to ::this.
An example of this would be:
[Table( "Movie", Schema = "::this" )]
public class Movie