I'm afraid I'm not clear on your problem. First it seemed like you wanted the driver, now it seems like you have the driver and you are having trouble with it. Could you be clear about what system has the database, what system you are on trying to access it, what products you have installed on each, and what steps you have made to try to make the connection.
The error message sounds like you have either exceeded the allowable users or that you haven't set up the server correctly to support both ABL and SQL connections. If the latter, you might want to open a thread on the DB admin forum.