i have a newtork cable of the router its like 20 metres long hidden under wooden floors...problem is i need 2 rj45 connections now....can i split this one into 2 using say a hub....or can i take one out of my pc as i have to network connections on the back of the pc i persume one you can use to share a connection with a xbox 360 am i correct....i do not want to start putting another wire into place as the as its too much work thanks for any help on this in advance .