I have 2 SQL Server Instances, SQL Server 2000 and SQL Server 2005 -both are developer editions-.
If I have the Northwind database attached to both SQL Server Instances and I need to access Northwind in a specific instance. What should I do?

Take into consideration that I'm using Visual Studio 2005 Team Edition and C#.
So,
I need to know how to access the Northwind database in a specific instance like SQL Server 2005.
What will my connection string be?