A DBI data source starts with "dbi:" followed by the driver name. Everything after that (in the same string) is passed to the driver itself. So what you need is something like DBI->connect("dbi:ADO:$dsn", $user, $passwd) where $dsn is a valid ADO connection string.

The DBD::ADO documentation references http://www.able-consulting.com/ADO_Conn.htm#DSN as a source of documentation on constructing ADO connection strings. There are several examples there.

Note that I have never used DBD::ADO; all of this was gleaned from reading the documentation.

Impossible Robot