I updated the DataMiningViewerClient sample on the downloads section of www.sqlserverdatamining.com.  This sample demonstrates how to host the data mining viewers from SQL Server 2005 in your own applications, and allows you to view models side-by-side.  For the most part, the update involved removing certain "workarounds" that were required for the beta 2 version.  The download includes the working application plus source code.