you already have a driver for it. Why would you need another driver?
Well if you really want to try out AMD's close source driver, which provides better 3D acceleration and better power saving features, you could try the following:
yum update kernel
if there is a kernel update, reboot with the new kernel.
I assume you use Fedora 16...
If you have now the kernel 3.2.5-3 installed (not PAE kernel!), you can do the following:
rpm -Uvh http://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-stable.noarch.rpm http://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-stable.noarch.rpm
yum install kmod-catalyst xorg-x11-drv-catalyst xorg-x11-drv-catalyst-libs.i686
keep in mind that this driver is more complicated to maintain than your current default driver. After every kernel or xorg-version update you have to reinstall it.
I don't mention akmod-catalyst, because it didn't work several times for me. But if you use a PAE kernel, you should install the following instead of the above:
yum install kmod-catalyst-PAE xorg-x11-drv-catalyst-libs.i686 xorg-x11-drv-catalyst
so disadvantages of this drivers (the two main advantages mentioned above):
- a bit more complicated to maintain
- possibly still some bugs with Gnome 3, maybe it crashs gnome shell sometimes
- in the xorg-version which Fedora 16 uses, it crashs applications which use xv-video.