I've been playing with EvoCam used with two TrendNet network cameras and the built-in camera on my iMac. It's well worth the price. I've successfully setup my airport extreme so that it maps the port of the iMac and see the EvoCam web server from outside my local network. (the EvoCam documentation doesn't explain how to do that.) I'm still experimenting with using the motion capture settings. Given the price I am amazed at how many features EvoCam has. The combination of the cheap TrendNet cameras and the inexpensive server software allows you to set up a very powerful video setup. It wold be good program for a bed and breakfast that wanted to setup a webcam of the view of the local mountaintop.