Download dll:
http://www.microsoft.com/en-us/download/confirmation.aspx?id=15104
http://www.cnblogs.com/huangcong/archive/2010/05/31/1748672.html
Microsoft Enterprise Library 5.0 系列
http://www.cnblogs.com/huangcong/category/248455.html
Enterprise Library系列文章回顾与总结
http://www.cnblogs.com/huangcong/category/248455.html