>Hello,
>
>I need to add a service reference from a client, which requests a certificate to be installed on our computer.
>When I go to the service location using Internet Explorer, it asks me to select the certificate, and after doing so, the WSDL file shows.
>
>However when I try to add the service reference to the .NET project, it gives the following error message:
>

>The HTTP request was forbidden with client authentication scheme 'Anonymous'
>

>
>I can't find a way to link the certificate to the project so it allows me to add the service reference.

You need to specify the credentials for the endpoint in the .config file.
See: .http://msdn.microsoft.com/en-us/library/ff648360.aspx