TFS 2010 Link Extensibility

I found this article (http://blogs.msdn.com/b/narend/archive/2006/10/13/how-to-extend-linking-and-workitem-ui-with-custom-link-types.aspx) about link extensibility in TFS 2005. I'm wondering how to do this in TFS 2010/Visual Studio 2010. It doesn't look like the dll Microsoft.TeamFoundation.WorkItemTracking.Controls.dll exists anymore, and this is where the IDialogControl interface was located.

How are you supposed to d开发者_Python百科o this in TFS 2010?

That DLL can be found in C:\Program Files\Microsoft Visual Studio 10.0\Common7\IDE\PrivateAssemblies