Open Query and Sharepoint

Hi All,

Thanks for reading this post and greater thanks for your reply, here is my issue. I have a report that works well in SQL SSRS 2012 (uses open query to connect to a 3rd party DB). However when I add this item to the Sharepoint site I get an error. I am using Sharepoint windows intergrated security and conclude that SharePoint is adding an extra layer of security.

Any pointers or tips will help greatly.

Regards,