I have a old Foscam Camera FI8918W (http://www.foscam.com/product/9.html) that doesn’t work with the original foscam component, so I modify the original one to support it.
To be honest I didn’t notice that exist a generic MJPEG camera component that could be used with my camera. I just focus in how modify the original foscam component to work with my camera (FI8918W).