nvidia driver question

[thedogfarted <thedogfarted inbox lv>]

I wonder if i should  install nvidia display driver form nvidia.com 
instead of my current driver from livna.

i have now installed following rpms:

nvidia-glx-1.0.4620-0.lvn.18.1
kernel-module-nvidia-2.4.22-1.2174.nptl-1.0.4620-0.lvn.18.1
nvidia-glx-devel-1.0.4620-0.lvn.18.1

and now i've downloaded NVIDIA-Linux-x86-1.0-5336-pkg1.run

The reason why i want to install is that i still have Mesa's GL header 
files in /usr/include. If i remember correctly, nvidia's install 
replaced them with their own, and this is what i need.

Why they weren't replaced when i installed driver from rpm? Can i safely 
just get the nvidia's GL header files and replace the existing ones?