I have been "tinkering" with DLNA for about a month now. If I am correct, you have to have a home WIFI system, have to have the AllShare Desktop server software (AllSharePCSW.exe) installed on your computer and running. It will add devices to the system as it discovers them. (I get a pop up from the icon in the trey that says such and such wants to join, click yes) Those devices must have WIFi turned on and their respective AllShare apps enabled.
I do not have a TV yet, but I would imagine that on the TV there is a place in the Menu where you enable your DLNA so that it will broadcast its availability. Then your computer will recognize it, add it and you will be able to access it from your phone's AllShare app under "Play media from a server on a player controlled by my phone"
