never done anything like that before so I really can't say if there is any way to make it work.
But you could try taking the hdd out of the enclosure and then connecting it to the mobo with IDE or sata. Of course this would make the external hdd become internal.
Not sure if that's what you want. And I'm not sure if that would work either, as I said I've never tried this kind of thing. But it's worth a try.