Now that VS2008 is released, one of its accompanying features is the ability to debug and step-into the actual source code used in .Net Framework 3.5. They will begin by offering the source code for the following Base Class Libraries System, System.IO, System.Collections, System.Configuration, System.Threading, System.Net, System.Security, System.Runtime, System.Text System.Web (ASP.Net) System.Windows.Forms (Windows Forms) System.Data (ADO.NET) System.Xml (XML) System.Windows (WPF) The source code will be released under the Microsoft Reference License (MS-RL). The final release of VS 2008 will support the ability to configure the debugger to dynamically download the .NET Framework debugger symbols (and corresponding source code) from a web server hosted by Microsoft. You'll be able to configure the .NET Framework symbols to be downloaded all in one shot, or manually retrieved on demand. Although this capability is not yet available, it soon will be. Microsoft developers have had