To set up your TV in a home PC network you need:
a PC in a home network running recent media server software. (Windows media player (from version 11 onward, TVersity or similar) this can be on any operating system ( Microsoft Windows XP or Vista,Intel Mac OS X, Linux, or similar)
a wired connection between your home network and your TV
or a wired connection between your router and your TV (to have a wireless connection between your DNLA server and your TV)
Additional info to set up a PC network with a router:
On the TV no special settings are necessary to connect automatically to the network
Connect the network cable (if needed ) from your router to the network connector entry of the TV (for the 42PES0001-set, at the side of the TV hub)