In the end i figured it out.
Set progdvb running, ticking the send as mpeg
then open vlc and open a stream
tick http and enter your machines ip address and port 8080
then fire up mplay in http mode or use cinema six.
Roku HD1500 rev b
Sony Bravia LCD
Yamaha AV gear
Sky HD........January !! if they release it as promised! - they didnt, now they want Â£300 !!!
Roku, maybe its time for the mini mac core duo ???