You can get a USB tunner/capture device for your laptop, and it will come with DVR software.
Can you use it with your TV via Firewire?????
Firewire is high speed interface, to use it you need the drivers for the applacion and the harware that is hooked to the firewire port.
Toshiba does make the DVR the firmware to use it is in the TV and DVR, Toshiba's own.
Your are spoose to be able to hook a miniDV to the TV with firewire and then play on the TV. Don't know if this would also work from a laptop. John