When answering one of my questions, DavidTrap (David) recently posted a link to
CN that in turn linked to
THIS (look on page 15)
It's a hardware device that takes multiple video camera signals and puts it on the net without the need for a PC.
The cheap web cameras have IR LEDs which might not be a good idea. Cameras like the WAT902H are very sensitive and don't need lighting. They give a nice image of the sky too.
James