关于castle和Could not find the dialect in the configuration错误

最近试了试castle，NND，老是报“Could not find the dialect in the configuration”，明明配的没问题，上网搜索所有教程都是这么配的。后来在一国外的网站解决NHibernate的问题的帖子，看的一哥们说把hibernate去了试试，当时也没试（关键是那帖子说这个办法没解决问题）。囧rz，今天试了试，居然解决问题了。估计可能和castle的版本有关系（顺便说一下castle网站的源码的例子也是不对的，NND）。希望遇到同样错误的哥们能搜到此文章。
原配置：
<configSections>
<section name="activerecord" type="Castle.ActiveRecord.Framework.Config.ActiveRecordSectionHandler, Castle.ActiveRecord" />
</configSections>
<activerecord>
<config>
<add key="hibernate.connection.driver_class" value="NHibernate.Driver.SqlClientDriver" />
<add key="hibernate.dialect" value="NHibernate.Dialect.MsSql2000Dialect" />
<add key="hibernate.connection.provider" value="NHibernate.Connection.DriverConnectionProvider" />
<add key="hibernate.connection.connection_string" value="UID=sa;Password=sa;Initial Catalog=ARDemo;Data Source=." />
</config>
</activerecord>
正确配置：
<configSections>
<section name="activerecord" type="Castle.ActiveRecord.Framework.Config.ActiveRecordSectionHandler, Castle.ActiveRecord" />
</configSections>
<activerecord>
<config>
<add key="connection.driver_class" value="NHibernate.Driver.SqlClientDriver" />
<add key="dialect" value="NHibernate.Dialect.MsSql2000Dialect" />
<add key="connection.provider" value="NHibernate.Connection.DriverConnectionProvider" />
<add key="proxyfactory.factory_class" value="NHibernate.ByteCode.Castle.ProxyFactoryFactory, NHibernate.ByteCode.Castle" />
<add key="connection.connection_string" value="UID=sa;Password=sa;Initial Catalog=ARDemo;Data Source=." />
</config>
</activerecord>