Can't connect Sony DCR-TRV38 to iMac

This is an older Mini DV camcorder that I am trying to connect by USB. iMovie doesn't recognize it at all. I don't have a firewire and don't know whether a standard one (from Best Buy eg) would work on this camera - i.e., is the connector the same? Can't find much about this specific model on the web. Any advice? I'd really like to transfer my old home movies onto iMovie for editing now that I have the time. Any and all advice is most welcome. Thank you.