All 3 on a gigabit switch, they are all connected to the internet, but I think only the host needs a connection?
My 2008 42″ Panny Plasma and 2 Samsung 43″ plasmas from Samsclub, Black Friday $ 400.00 each.
The original setup was for Forza 4, which took some tweaking, GT5 has more image adjustbility so the panels line up better.
When driving the slight mis match and panel bezels are not noticed.
Here is a video from Forza.