You can pickup a multi-channel PCI video capture card anywhere (ie. amazon), which basically just has some BNC video connections on it, and including some nifty software to record stuff for you. I have (2) "Q-See" 4-channel cards, along with the 5 cameras (3 more coming soon). There is a dedicated puter in another room that all the cables running to and it records 24/7. Using the s/w included, it's actually got a mini-web server built-in. The image you see on the server is using the remote web software, which I can pretty much view anywhere with an internet connection.
That's [H]ardcore, I'm definitely gonna follow suit.
<3 Saur