Urgent Please: Cannot publish Reports to the Sharepoint Integrated - Reporting Services Login

Hi,

Sharepoint 2010 / SQL Server 2008 R2

The user I am using in BIDS to deploy the reports has Admin permission to the site collection and databases.

Reporting Services Login prompt all times and I can´t go ahead to publish the reports.

I ve reviewed my deployment properties - http://msdn.microsoft.com/en-us/library/bb283155(SQL.90).aspx

The same test works to my dedicated server (Sharepoint and SQL Server in the same machine) but not to the enviorement bellow:

Server 1 - SSED, SSAS, SSRS, Sharepoint Web Front (minimal installation)

Server 2 - Sharepoint Server 2010 (SSRS Sharepoint Integration Mode)

I´ve read all the discussions and articles I couldn´t find anything conclusive.

Please, any clues?!

Thanks in advance,

Alex Berenguer