ok read carefully because this is quite long- I have a desktop computer upstairs which has a usb adsl modem which has just an RJ11 port. downstairs there is an xbox 360 which i want to put xbox live on. connecting them with a massively long wire would be out of the question. but i have looked around the house and there is a phonenext to the xbox whixch has a splitter with a free RJ11 port. will fitting an rj45 adpater on that get me an interent connection? or are there any other solutions?