It's late and I'm tired, so forgive me if I misunderstand
.
Try this test your connection info and get a correct connection string at the end of it:
* Create a new file somewhere with a .udl extension, then open it.
* Select the appropriate DB connection in the providers tab.
* Enter your server information, username and password in the connection tab.
* Select the database from the list.
* Click test connection. Assuming your information is correct, it should connect fine.
* Click OK.
* Open your .udl file in wordpad/notepad/similar. This should show you your connection string.