1. What does that mean: "New Network Found" (in plain non-techie English, please, thank you)?
2. What does "Public Zone" keeps your computer hidden from others on the network" mean? I have a single computer, at home, sitting on my desk, not "networked" to anything or anyone that I'm aware of; so who is it supposedly being "hidden" from and where are they located ... to what is this pop-up referring? (Same for the "Trusted" business.)

Much appreciated.