I used a Microsoft Lifecam VX 6000 for my webcam.
Earthcam.com is a internet site that will allow you to broadcast over the internet. You just have to download there software.
I had mine setup on the outside of the incubator. The only problem with it was I had to keep the glass clean.
The only thing I would do different is look for a wireless cam. But I really liked the quality picture I got from the Microsoft cam.
Trey