I just can't believe how easy it is to get it up and working.
Plugged it in down stairs, cable from the router to the home plug. Plug the other one in upstairs, cable from that one to the switch. two cables from the switch to the laptop and desktop. Jobs done.
No more having to mess about with ndiswrapper and bw43 in ubuntu trying to get the wireless card to work.
I've also tested streaming to the PS3, and it can stream a DVD fine now, no lag or anything on it.