Please follow these steps to connect with open data source like MS Access:
EditScript --> go to Database and select OLE DB
OLE DB (selecting force 32-bit option) > connect > Provider: Microsoft jet 4.0 > Connection: Browse for your .mdb file and type your credentials. Also is important to check the option "Allow saving password". > then click in "Test connection" to ensure that everything's right and you're done.
It's important to check the option force 32-bit because this OLEDB connector is just available in 32 bits, and you don't need to install MS Access to use this method.