missing files?

Aug 12, 2011 at 11:00 PM

Just downloaded version 3.01 of the Facebook Developer Toolkit and I'm working through this article  http://www.devtacular.com/articles/bkonrad/how-to-retrieve-user-data-from-facebook-connect-in-aspnet/  however, I seem to be missing a file.  I'm getting the compiler error: Type or namespace API cannot be found..

on this line:

                API api = new API();

                api.ApplicationKey = connectFB.ApiKey;
                api.SessionKey = connectFB.SessionKey;
                api.Secret = connectFB.SecretKey;
                api.uid = connectFB.UserID;

I've got refs to facebook.dll, and facebook.web.dll as well as using statements to those.  

Any ideas??