By "dv input" do you mean Firewire (1394)? I think that was the correct techie name and I think you may be able to use a 1394 to USB cable.
Maybe like this?
Ayangyang FW-037 Sony camera 1394 1394 4P cable USB transfer cable DV machine dedicated data cable - Newegg.com
Thats the older USB 2 so the data rate is slower. Might be too slow to capture the footage without drops in data.
If the laptop has a express card slot maybe ?
SEDNA - Express Card 34MM 2 - Port 1394 Adapter Card for Notebook / Laptop Computer - Newegg.com