If you're still listening on the standard port (TCP 1433), this article should be all you need. Otherwise, modify the port # based on what you are using:

http://support.microsoft.com/default.aspx?scid=kb;en-us;287932

K. Brian Kelley

http://www.truthsolutions.com/

Author: Start to Finish Guide to SQL Server Performance Monitoring

http://www.netimpress.com/shop/product.asp?ProductID=NI-SQL1