Cannot create a connection to data source !!!!!!!

I cannot get this error resolve either for myself or any users, and I'm actually part of the Admin group! Furthermore, a user with whom I'm tring allow to view this report keeps getting prompted for their windows username and password. I thought that since this datasource was set to Windows Authentification that it would just pass it through?

I'm pulling my hair out at this point:

Screen Shots:

http://www.webfound.net/datasource_connection.jpg

http://www.webfound.net/datasource_connection2.jpg

http://www.webfound.net/datasource_connection3.jpg

Also As far as I know, I've given sufficient permissions to the right logins and right users on my SQL Databases and related stored procs that the datasets (not datasource) run

An error has occurred during report processing.

Cannot create a connection to data source 'datasourcename'.

For more information about this error navigate to the report server on the local server machine, or enable remote errors

no it usues whatever account iis is running under.

IUSR_something I think.

if you want use integrated auth you need to use impersonation.

|||ok....then how do incorporate personalization in Reporting Services! I don't see anything on that...I think you're referring to .NET, I'm talking about Reporting Services 2005|||I posted this in the wrong forum by accident..I'll move it to Reporting Services..sorry