SQL Server Authentication in CS2009-Collection of common programming errors

Hi,

When using SQL Server Authentication to connect a web server and a db server from two different domains, how do I set the connectionstring to use for each of the web services (catalog, orders, marketing and profiles)? In Commerce Server Manager, I see that the connectionstring I supplied while installing and configuring CS is used for the different resources, but if I want another sql login to be used for the web services, where do I specify this?

Brgds Jonas