ADO Connectstring DSN-less ODBC This way could be very difficult, since you have a lot of options you could specify in the connection string

However, the simple connection string I present to you here is actually all you need for adequate performance in most cases. Lets say you have uploaded an ad2000.mdb file into your /database/ directory at your host. Now all you do is:

Function Incdb_GetConnectionString( nNumber )
    Incdb_GetConnectionString = "DRIVER={Microsoft Access Driver (*.mdb)}; DBQ=" & Server.MapPath("\database\ad2000.mdb")
End Function