Background info: we've moved into a 5 year old house, and it's woefully short of telephone jacks etc, in particular where our TV/hifi etc is positioned. We need to add a telephone jack & a second run of cable from our satellite multiswitch to the Tivo. In addition, a couple of ethernet jacks would be nice there too The previous owner had already ran speaker cable for surround sound, which saves some bother. How tricky is it to "add" a telephone extension to a pre-existing setup? We're not looking for a second line, just another phone jack. Combined with the needs for a second coax + some network cabling, is this a job for a professional?