ok ,,i understand that about the hub or switch but my Modem and Router and Hub are all upstairs with one computer and a mag 254 all connected by hard wire also downstairs in the living room i have a 360 elite and a mag 254 and in my bedroom downstairs I have a second computer and a 360 elite and a mag 254 all hardwire but in order to watch either the 360 elite or the mag 254 i have to keep switching out the cat 5 cable from one to the other , i dont want to run seperate 100 foot cat 5 cables again from up stairs to downstairs and for some reason i can not get my wifi adapters to work i have bought 2 USB 2.0 wireless 802.lln adapters but for some reason they wont connect ,,so i am asking some one with the knowlege if they know what i can do ,,,so if i can run a nother hub where would it go thank you