Customize Report Manager

I would like to use Report Managers interface for choosing reports.

But all of the reports uses different dsu(datasourceuser) and dsp(datasourcepassword) depending on which user that is logon.

I would like to call the interface from a webapplication(where they have the current dsu & dsp).

Is there a way to customize Report Manager to save the dsu & dsp so users don't have to login for each report?

Or could I make a clever transformation from the Windows userid?

Or any other ideas?

There is not much you can do to customize report manager. I would recommend using Visual Studio 2005 to create a web application.