I don't understand what exactly it is, other than a way for me to connect a digital camcorder to my computer in order to transfer data. Do most computers have a firewire port or something? Like, where is it on the computer? I just have a regular micron built 600 mghertz PIII system I bought 2.5 years ago. How do i know if it supports firewire or whatever. Sorry, I'm stupid about this thing. Thanks.