that looks not good. OK, let's reset the configuration and make a fresh driver installation. First deinstall all nvidia relaten stuff - please deinstall all packages from the output of
yum list installed | grep nvidia
After that reboot the system. When the system is up again, make a backup of your xorg.conf and create a new one via:
cp /etc/X11/xorg.conf /etc/X11/xorg.conf.backup
Additionally you have to reconfigure your keyboard layout.
Reboot your system again. When it's up again, install livna's nvidia driver that fits to your kernel version and your system architecture.
Find out your kernel version and the architecture.
Install the nvidia driver. (The dependences will be resolved automatically)
yum -y install kmod-nvidia-%kernel_version%.fc8.%architecture%
yum -y install kmod-nvidia-126.96.36.199-12.fc8.i686
After that reboot your system and all should be OK.