There is actually a KB for all these questions:
954242 Frequently asked questions about the integration of SQL Server Reporting Services (SSRS) with Microsoft Dynamics GP 10.0 and Microsoft Dynamics GP 2010
There is actually a KB for all these questions:
954242 Frequently asked questions about the integration of SQL Server Reporting Services (SSRS) with Microsoft Dynamics GP 10.0 and Microsoft Dynamics GP 2010