Yeah, uninstall what you have. rpm -e NVIDIA_kernel (but if NVIDIA_GLX complains, then rpm -e it too).
Then, download and run the NVchooser file from the driver download page. It should tell you exactly which files you need.
If it says NVIDIA_kernel-1.0-4191.src.rpm, then you have a choice between that and .tar.gz, either one will work the same way. But in that case, you will need to make sure you have a kernel-source package installed, whose version matches the output of uname -r.