Just examine an instance of the Type you are trying to create to get its
assembly name and type name:

EG

 public class Program
 {

   class Foo<T> : MarshalByRefObject
   {
     public T t;
     public string MyDomain
     {
       get { return AppDomain.CurrentDomain.FriendlyName; }
     }
   }

   class Bar
   {
   }

   public static void Main(string[] args)
   {
     try
     {
       AppDomain d = AppDomain.CreateDomain("new domain");
       Type t = typeof(Foo<Bar>);

       Console.WriteLine(t.FullName);
       Foo<Bar> remote =
(Foo<Bar>)d.CreateInstanceAndUnwrap(t.Assembly.FullName, t.FullName);
       Console.WriteLine(remote.MyDomain);

     }
     catch (Exception ex)
     {
       Console.WriteLine(ex);
     }
     Console.WriteLine("Hit any key to exit");
     Console.ReadKey();
   }
 }

David