Using Assembly.GetType("MyCompany.Class1.Class2") returns null

I'm attempting to use Assembly.GetType("MyCompany.Class1.Class2") to dynamically get a type from a string.

Assembly.GetType("MyCompany.Class1");

works as expected.

If I embed a class within another class such as:

namespace MyCompany
{
  public class Class1
  {
     //.....
     public class Class2
     {
        //.....
     }
  }
}

and try to get the type Class2

Assembly.GetType("MyCompany.Class1.Class2") 

will return a null.

I'm using the .NET Frameworks 3.5 SP1

Does anyone know what I'm doing incorrectly and what I can do to fix this?

Thanks in advance

Kevin D. Wolf Tampa, FL