From memory, you need an ACTIVE displayport dongle to run Eyefinity.
I'm not sure if you're trying to game on this setup, BUT I don't think your VGA card has the power to run titles across 3 screens.
It's not for gaming.
It is very confusing, there is 3 port on the card, but it seems this active displayport is required on the HDMI connector.
Though I can connect the HDMI direclty to a screen. So does it mean 3 screens cannot be configured unsing the HDMI direclty ?
It would be VGA+DVI (via a displayport connected to HDMI)+DVI ??
This is disappointing...