I have a client with two Perl CGI intranet database applications that
have been working successfully for over a year.
Each one runs on the same IIS6 server and connects to a different
database within the same SQL Server on a different machine using the same

I just installed SQL Server 2005 Express edition, and created an app in
Visual Studio using C#.  I get the following error when trying to connect:
"An error has occurred while establishing a connection to the server.  When
connecting to SQL Server 2005, this failure may be caused ...