同一应用程序中不同版本的ReportViewer组件

In my company i have an application which should run at two different sites with different database configuration. At one site we have Sql Server 2008 R2, at the other one Sql Server 2005; we cannot upgrade the Sql Server 2005 until next yer. The application has no problem to access the different DB, but i have a problem with some reports hosted by report server.In my company i have an application which shoul