....But you're limited by cable length with USB, and they tend to be
"webcams" and not proper outdoor cameras...


"Christian McArdle" wrote in message
t...
What I'd like to do is to add some CCTV cameras, but use a PC to
capture the pictures and software to trigger any alarms.

You could have bought USB based cameras. The camera sensor will be the
same
CCD, but the signals are kept in a computer friendly fashion rather than
converted to an analogue signal that the computer requires expensive
hardware to understand.

Christian.