Setup guidelines:

You have to specify the location of the Reporting Services Server web service to use:

SQL 2000:

http://<Server Name>/ReportServer/ReportService.asmx

SQL Server 2005/2008:

 Native mode:  http://<Server Name>/ReportServer/ReportService2005.asmx

 Sharepoint mode http://<Server Name>/<Site Name>/_vti_bin/ReportServer/ReportService2006.asmx

SQL Server 2008R2/2012

Both native and Sharepoint mode use the same webservice: ReportService2010.asmx

The SQL Server 2005/2008 endpoints are still available so you can use them as well

When running in SharePoint Integration mode you also have to specify the SharePoint document library that is used for storing the report definitions, for example http://intranet/SiteDirectory/Rapportage/Rapporten

For more information about the endpoints see the MSDN documentation: http://msdn.microsoft.com/en-us/library/ms155398.aspx