Reporting Services 2005 Report Builder

Does anyone know if RS 2005 report builder will work on databases other than SQL Server 2005?

In other words, say I have SQL Server 2005 running Reporting Service 2005 and want to allow the end users to build their own ad-hoc reports against a SQL Server 2000 application database... would this be possible?
Thanks,
-KirkYes, Report Builder will work against both SQL Server (2000 and 2005) and Analysis Services 2005. We are working on support for additional databases.|||So does it mean Report Builder will be supporting other databases such as Oracle or OLE DB datasources? What about supporting a custom data provider (as in Report Designer)?

Thanks!|||I think it depends on the report model that you created.sql