not very, if at all. While many states have laws in place require VIOP to be able to locate, it is not as effective as a 911 call from land lines. Within the past year, I was a 911 telecommnicator. The VIOP company wanted us to sign a contract indicating that they could just tell us a general location (as opposed to a specific location). Our 911 director refused to sign. Always be prepared to give a physical location.

you are going to have to run a CAT 3 or CAT 5 cable... from the NID to the location that you want the telephone jack to be located...

wireless phone jacks act as a transmitter and reciever... the reciever needs power to get the radio signal from the base or transmitter... so any cordless phone system, or cordless phone jack (which i do not ever recommend) will need power at the transmission and recieving point..

Ok there is a couple things you can check.

1. If you connect the CPU to the TV directly. Then you will need to run a cable from the TV(audio out port) to the Home Theater system (audio In Port).

2. Hook the video from the CPU to the TV directly and then hook the audio to the Home theater system. (You home theater system has an optical input so this is what you would use for audio input) So 1 cable for video to tv and 1 cable for audio to theater system.

NOTE: I'm not sure what your inputs and outputs you have on your TV and CPU.

Let me know if you need more assistance. I'll just need those details
GOOD LUCK