Which database? for ODBC/OLEDB, you have to create a connection first(Control Panel->Administrative Tools->Data Sources(ODBC)...), once that is created properly, that should be visible there in QV connection.
DB2 ODBC driver wont be found on Windows by default. You may need to install it. Test installing the DB2 client on your local machine before installing on the Server. Also check the compatibility of the driver with your operating system.