Updated samples for parallel programming

We’ve refreshed our samples for parallel programming with the .NET Framework 4.  Thanks to the gracious assistance of the fabulous Lisa Feigenbaum and others on the Visual Basic team, in this refresh the majority of the samples are now available not only in C# but also in Visual Basic. The samples are available for download at http://code.msdn.microsoft.com/ParExtSamples, and a description of the samples is available at http://blogs.msdn.com/pfxteam/archive/2009/12/09/9934811.aspx.