I really apprecite everyone's input.
Since I haven't purchased any cameras yet, and I'll be running Vista on the main PC, seems like IP is the way to go.
Why couldn't I use the video output of the PC, injected into the broadband with a modulator? I guess I'll need some type of composite output...
The Panasonic BL-WV10A may be a decent out of the box solution, though audio would be a plus. The router IS in close proximity to the video distribution amplifier, allowing easy hardwire connection. Is the buzzer notification of motion annoying? Can it be toggled?
I guess it's time to stop ignoring HTPC threads, and start learning about video distribution.
Thanks to everyone.