Prompt for username and password using SQL Server Native Client 10.0 ODBC
Connection string
This SQL Server Native Client 10.0 ODBC Driver connection string can be used for connections to SQL Server 2008, SQL Server 2005, SQL Server 2000 and SQL Server 7.0.
This one is a bit tricky. First you need to set the connection object's Prompt property to adPromptAlways. Then use the connection string to connect to the database.
oConn.Properties("Prompt") = adPromptAlways
oConn.Open "Driver={SQL Server Native Client 10.0};Server=myServerAddress;Database=myDataBase;"