Microsoft.Web.Administration 7.0.0

The Microsoft.Web.Administration namespace contains classes that a developer can use to administer IIS Manager. With the classes in this namespace, an administrator can read and write configuration information to ApplicationHost.config, Web.config, and Administration.config files. see: http://blogs.msdn.com/b/carlosag/archive/2006/04/17/microsoftwebadministration.aspx