Reporting Services Windows Sharepoint Services integration is different so is the development, I don't think I can tell you how but if you spend time with the links below you can implement the changes needed.
http://msdn.microsoft.com/en-us/library/bb326356.aspx
http://mosshowto.blogspot.com/2009/02/reporting-services-2008-report.html
Kind regards,
Gift Peddie