You are really kind of vague in your explaining your problem, but I'll try. When you say video tape and then you mention camera, I don't really know what you are saying. Let me assume that you have a Digital camera and you want to put your video onto the computer. In that case you should have a digital cable out from your camera and in to your computer through the firewall (1394 slot) and you'll find the connection in your My Computer. If you do not have a firewall (1394 connection on your computer, you can not input vidéo into it unless you install a capture card.
hairyplums, you're really not being very helpful. To give useful advice people need to know something about your computer, what version of Windows you are using, do you have a video capture card and anything else that might be relevant.