[IronPython] Newbie question about importing from System.Windows

[Funke, Matt]

I'm running IronPython 2.6.1 for .NET 4.0, and have installed Visual Studio 2010 and Silverlight 4SP2.  I tried to import System.Windows.Controls, but got an error that "Windows" does not exist.  Trying to run ipy from the command line and running this:

>>> import System
>>> dir(System)

... confirms that there is no "Windows" entry.  Could another "System" be taking precedence?  How can I find out?

Thanks in advance for any help you can lend.

 -- Matt Funke