Displaying NHibernate SQL in Visual Studio’s Output Window

I am creating an ASP.NET MVC application that uses NHibernate to pull data from SQL Server. I wanted to see the generated SQL statements in Visual Studio’s Output Window as I debug the code. NHibernate contains a property, show_sql which should do what I need, right?  Not exactly.  The SQL statements are displayed when I run my unit tests, but I want to see them as I step through the code.