As I upgrade cameras, I keep the old ones around just in case I find some use for them. The main cameras are connected to an Avermedia NV3000. The leftovers are connected to modulators so we can watch our dog on Slingbox. I decided to get an Aviosys 9100A to get those cameras web enabled. It was easy to install and I've got 2 cameras running right now. I've integrated it into our Floorplan GUI using the device's special URLs described here. It works well, but the camera switching is a tad slow.