Accessing external reports using Report Explorer

Question

Hi,

I am trying to access SSRS reports in MOSS in native mode using Report Explorer.

The issue is - the reports that I am trying to access are hosted on an external environment, say www.3rdpartyprovider.com/reports. The 3rd party provider lets us access the reports using windows authentication. When I try to go to the page that has the report explorer web part, I am being asked to provide the user name and pwd.

Is there a way I can establish a trusted connection between MOSS and the 3rd party site so that the users dont have to provide their credentials when ever they click on the reports page?

Thanks,
Kiran