Here is a brief on how to work (develop) Reporting Services based reports in an environment with Team Foundation Server 2010 used for source control and SQL Server 2008 R2 used as a database server / Reporting Services server.
Instructions on installing components are here.
- Visual Studio 2008 Team Explorer,
- Visual Studio 2008 Service Pack 1,
- Visual Studio Team System 2008 Service Pack 1 Forward Compatibility Update for Team Foundation Server 2010
and connect to TFS server.