ATI Radeon X 700 pro not in system-config-display

[maxer1]

Alan mentioned that the various PCI Express cards are supported in 2D 
mode under FC3 Xorg.
However the particular card I have an interest in is the ATI Radeon X 
700 pro, which system-config-display doesn't have a entry for.

I received word from a reliable source that perhaps this card isn't at 
all supported in the latest xorg. Is there a hardware list for those 
supported cards in xorg that I can look at?

Thanks in advance,

RaXeT