installing new Ati Radeon 7000 w? fc2

[HD]

I currently have a nvidia TNT2 video card installed on my system 
(using just the nv driver) but I'm planning to replace it with a Ati 
Radeon 7000. I am running Fedora Core 2. Will the new card be 
automatically detected? Should I make any changes to xorg.conf 
*before* installing the new card? Is there anything else I should be 
aware of before making this change?

Thanks!

-- 
HD

Tipping my hat to Fedora.