Problem with image with external URL

I get such warning :
"Images with external URL references will not display if the report is published to a report server without an UnattendedExecutionAccount"
And picture dont shows.
Can anybody help me ?
Thanks.
P.S I have SP1Please see section "4.1.4 External Images" in the SP1 readme for more
information.
--
Bryan Keller
Developer Documentation
SQL Server Reporting Services
A friendly reminder that this posting is provided "AS IS" with no
warranties, and confers no rights.
"Ivan" <Ivan@.discussions.microsoft.com> wrote in message
news:AEE72F48-A0A2-46AE-B4A2-982E25BCBDFA@.microsoft.com...
> I get such warning :
> "Images with external URL references will not display if the report is
published to a report server without an UnattendedExecutionAccount"
> And picture dont shows.
> Can anybody help me ?
> Thanks.
> P.S I have SP1
>