The Visual C++ Team Blog has an entry about deploying the C++ runtime linking to a Channel 9 video on the topic. Since Visual Studio .NET 2005, the Visual C++ team has been updating the C++ runtime and choosing a new DLL to house that runtime to avoid “DLL hell” and other incompatabilities from updating the runtime underneath an already deployed application. If you’re using C++ and deploying your application with the runtime, you might want to watch the Channel 9 video and explore your options to choose the one that’s best for you.