1) I have an ethernet router in my basement. One of the cables goes to my son's bedroom. If he plugs that cable into a wireless router, will the wireless router work? 2) If the above will work: If the wireless router isn't configured correctly, will intruders be able to get into the network that is behind the wired ethernet router? I understand they would be able to compromise the wireless network, but will they be stopped from going further by the wired router? 3) Also, would the wireless network have its own limited amount of bandwidth, or would it share all of the network's bandwidth. What I mean is this - the wired router has 4 ports, so I assume the cable going to my son uses a fourth of the bandwidth. If he sets up the wireless router, and 4 people are connected to it, are they sharing just his fourth of the bandwidth, or do the computers on the wired router lose their bandwidth? Thanks.