I get this error on the app tier dual server set up.
[09/26/05,16:01:10] vs70uimgr: DisplayMessage_START:Error 32000.The Commandline '"
E:\Program Files\Microsoft Visual Studio 2005 Team Foundation Server\Tools\createds.exe" /setup /install
"http://servername changed/ReportServer/ReportService.asmx" TfsReportDS "Data source=servername changed;initial catalog=TfsWarehouse"

TFS Beta 3 Report Server Error
Webhawk
1. SQL Server
2. SQL Server Agent
3. SQL Server Analysis Services
4. SQL Server Reporting Services
Also, please make sure you did not use the non-default instance to install SQL 2005.
Thanks,
Scott
Pete Edberg