Connecting to Reporting Services Server failed!!!

SQL Server 2005 and SSRS 2005 is curently installed on the same box. The OS is Windows 2003 (S) enterprise edition.

When I connect to the Reporting Services Server using the Sql Server Management studio I get the following error message

The request failed with HTTP status 407: Proxy Authentication Required.

(Microsoft.sqlserver.Management.UI.RSClient)

rsAccessDenied

I am tring to connect using the Windows Admin id. I would like to get an answer from this form.

-Aza

Any body to help here

-Nitu