has a firewire port, then all you need is a Firewire cable. The DCR-TRV460 is a miniDV tape based camcorder... Launch MovieMaker and Capture the video. If your computer has no firewire port, then hopefully it has an available expansion slot so you can add one.
Firewire, IEEE1394 and i.LINK are all the same thing. Since we don't know what computer hardware you are using, we don't know which firewire cable you need.
Most folks can't get USB streaming to work and that method provides very highly compressed, poor quality video... And USB-to-firewire cable/converter/adapter/hub things won't work, either.
is there a software that will download my tapes, on vista.