Am just a beginner at c#, although have done plenty of cobol in the past.
Anyway, have a very short 30 line console program that simply connects to SQL 2000 / Northwind database across a network. Get an error message "access is denied or server does not exist". Using ADO.NET drivers. However can connect perfectly well to same database using exactly the same connection parameters ( server name, username, password, client hostname) both from Access 2000 or a C# Windows application.

Would welcome any suggestions about what could be wrong ??