Stepping through .NET Framework source code is now possible

This is the big news today. You can now configure Visual Studio 2008 to step through .NET 3.5 source. Scott Hanselman has the steps to set this up...except for one detail. When installing the QFE (KB944899) patch, you'll need to have your the VS 2008 installation disk you used to install in your DVD drive (or have the ISO mounted). If you don't, the patch just silently rolls back and fails.