Thanx for your response Joe.
I went back to HP and they agree with you that the Atheros chipset is not WiDi compatible.
But they do say that the new HP ProBook 450 series with the "Meditek 802.11 b/g/n 1x1 with Bluetooth® v4.0 Combo9,10" chipset is WiDi compatible even though this item is not found in the compatibility list.
Can you comment on this?
Thanx,
Charlie Brown