Blog：
Microsoft Windows SDK Blog
http://blogs.msdn.com/windowssdk/
下载：
Microsoft Windows SDK for Windows 7 and .NET Framework 3.5 SP1 (ISO)
http://www.microsoft.com/downloads/details.aspx?familyid=71DEB800-C591-4F97-A900-BEA146E4FAE1&displaylang=en