I just put in a computer at my father's house and he wants us to be able to use WebCams to "see" each other. I don't know the first thing about what to get. I looked and they range $21 to $150 and on up. What do I need. Is there more to it than just purchasing the web cam and plugging it into your USB port. I mean I am sure there is some software but is there anything else I need to be aware of?