If your video card is a firewire card then you'll need a firewire cable and not the ordinary Video/Audio cables a TV uses.
If your video card is not a firewire card, you'll need to get one and install it. They usually come with a cable. About $20 US.
Then your video software should find the camera.
PS, the Sony software may work once you have the firewire. USB is (usually) too slow to allow full speed capture.
Fav quote - "Experience is whatcha don't get 'till ya don't need it no more."
System - Athlon 1.4GHz, Win98, Hauppauge PVR250 receiver and compressor.
Software -Magix Movie Edit Pro 10, Nero 6 + NeroVision Express, Moho 4.61, PSP 8.1, Bryce, Quicktime 6.52 pro, Goldwave 5, DVD-Lab.
Cameras - Panasonic GS9, Canon ES8400V, Canon EOS D20 and Canon A70