You may have limited your search by looking for a web cam. Web cams usually are for situations where we control lighting so let's ask this. Did you look at the newer WiFi enabled camcorders and of course what they offer at Ustream?
I wonder if involving a PC is a good idea here. That is, if I made setup too techy, no one could capture the moment.
I am looking to purchase a web cam that I can use in an outdoor environment. specifically, I have a panasonic cf-30 toughbook that I use in my profession of emergency services (police, fire, ems). I am looking for a usb or wireless camera that I can use with my computer to take real time video of emergency operations, and send via the internet to a remote location. i.e. responding to the scene of a hazardous materials incident, set up my computer and web cam, and then send real time video to an emergency operations center. I tried this actual scenario recently, but the standard web cam I have would not work. due to the bright outdoor environment, the picture was completely washed out. the video settings could not be adjusted to allow this to work. additionally, I am looking for one that is not too expensive. any ideas? please advise, and thank you!!