I've recently installed MS Communicator on my personal PC however when I try to log in I get an error message: 'Can not connect to the communication services. Please wait for your system administrator to correct the problem and try again later. If the problem consist contact your system adminstrator'. I

I am the adminstrator and am not sure how to resolve... Communicator has been set up for 'automatic configuration'... and I'm using broadband... Can anyone help!

Kind Regards