Hi dottor_renzi and welcome to the forum
To get full quality video onto a PC the only connection that can be used is firewire. USB is just not up to the transfer rates required. USB connections are put onto a camcorder so you can transfer still images to the PC or to use the cam as a webcam.
So I'm afraid that you are going to have to spend a little money to get connected by firewire. If the laptop already has firewire connections on it then you will only need the cable and that should cost you under £10 online. If no onboard firewire then you should be able to get a PCMCIA firewire card for around £20-£30 and that will include a firewire cable.
Mark.