If its analogue you will have to buy a video capture card. Most TV cards have this ability and come with the software to do it. Although VirtualDub is a free third party program to use preferred by most.
Here is a popular PC TV card
http://www.newegg.com/Product/Produc...82E16815293006
The main problem with analogue is the conversion time, it has a moderate learning curve to do good conversions, and takes hours to encode video even on fast computers. If you plan on shooting alot of video its a worthwhile investment to get a digital camcorder, which can output the video directly to a digital format.