Prompt for credentials when logging onto a website

Hello All,

We are using the request.servervariables("logon_user") to retrieve the LAN userid and domain to be displayed in the initial logon screen. When some settings is changed the domain and userid are displayed but it prompts for the login credentials which should not happen. If that setting is changed to avoid prompt, the domain and userid are not displayed.

The requirement is that the domain and userid should automatically be displayed without prompting for the credentials. Could anyone let me know what settings have to be done in IIS 6.0 to satisfy the above requirement.

Thanks and Regards,
K. Sripriya