I have a Bravia tv communicating wirelessly to the Internet through a Quest PK 5000 wired/wireless router.  I have a dell computer running XP, hardwired through the same router thatthe tv is using.  According to Sony I can live stream videos from the PC to the tv, using a piece of software (that doesn't appear to work and there is no technical support on), that I downloaded and installed.  Since I can communicate with the internet from both the tv and the pc, I assume that communications with the router is not the problem.  I seem to be missing something in the handshake to allow these units to 'talk' to each other.  I would appreciate any help you can give me.