http://msmvps.com/blogs/kernelmustard/archive/2005/11/03/74214.aspxThe new compiler in the VS 2005 distribution is version 14, just like the WDK compiler: Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 14.00.41204.17 for 80x86 The Visual Studio 2005 compiler is: Microsoft (R) 32-bit C/C++ Optimizing CompilerenCommunityServer 2008.5 SP2 (Build: 40407.4157)