How to use configSource to split configuration files in App.config/Web.config

http://weblogs.asp.net/fmarguerie/archive/2007/04/26/using-configsource-to-split-configuration-files.aspx

http://www.cnblogs.com/Terrylee/archive/2006/07/03/enterprise_library2_1.html

http://blogs.msdn.com/tomholl/archive/2006/04/02/entlib2externalconfig.aspx

http://www.odetocode.com/Articles/418.aspx

http://shaikariv-ms.spaces.live.com/blog/cns!1E15C67CC48202AB!114.entry?_c11_blogpart_blogpart=blogview&_c=blogpart