I am brand new to Broadband and a oap that is struggling to learn. For the AOL wireless set up I had to be near the one and only phone socket in my house. This means I am in a doorway with router on a chair. I intend to go wireless via a usb but logic tells me I have to buy a longer grey cable that goes from the socket (through a filter) to the back of the router in order to place the router in a room out of the doorway? If so, are they bog standard things, and what do I ask for?