http://blogs.msdn.com/b/jgalasyn/archive/2006/09/07/745058.aspxCheck out the Windows SDK RC1 docs online: http://windowssdk.msdn.microsoft.com/en-us/library/default.aspx You'll find my Windows Forms/WPF interop (aka "Crossbow runtime") docs under the "Migration and Interoperability" node: http://windowssdken-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)