Reporting Services URL asking for credentials

Hi All,
When opening http://sqlservername/Reports/Pages/Folder.aspx or http://sqlservername/Reportserver I get the window that asks for credentials to connect to 'sqlservername.domain.local'. If I enter the username and password works fine. Is there any way to disable authentication? I'd like to be able to go to the URL without being asked for credentials.
I'm using SQL 2005 on Win 2003. It doesn't ask for credentials when opening the URL from the SQL box (IE6) or other DBAs workstations (IE7). It's just one test box with IE7 that does ask for authentication.
Any thoughts?
Thank you,

I found the problem...
I had to disable “Internet Explorer Enhanced Security Configuration”
Cheers []