I followed the F15 sticky and got the following:
[root@me-linux me2]# rpm -Uvh
http://download1.rpmfusion.org/free/...ble.noarch.rpm http://download1.rpmfusion.org/nonfr...ble.noarch.rpm
Retrieving
http://download1.rpmfusion.org/free/...ble.noarch.rpm
Retrieving
http://download1.rpmfusion.org/nonfr...ble.noarch.rpm
warning: /var/tmp/rpm-tmp.DOFrPH: Header V3 RSA/SHA256 Signature, key ID a3780952: NOKEY
warning: /var/tmp/rpm-tmp.PxIiUK: Header V3 RSA/SHA256 Signature, key ID 2425b284: NOKEY
Preparing... ########################################### [100%]
package rpmfusion-free-release-13-4.noarch is already installed
[root@me-linux me2]# yum install akmod-nvidia xorg-x11-drv-nvidia-libs.i686
Loaded plugins: langpacks, presto, refresh-packagekit
Setting up Install Process
No package akmod-nvidia available.
No package xorg-x11-drv-nvidia-libs.i686 available.
Error: Nothing to do
Now what?