Using: nvidia-installer ncurses user interface -> License accepted. -> No precompiled kernel interface was found to match your kernel; would you li ke the installer to attempt to download a kernel interface for your kernel f rom the NVIDIA ftp site (ftp://download.nvidia.com)? (Answer: No) -> No precompiled kernel interface was found to match your kernel; this means that the installer will need to compile a new kernel interface. -> Performing CC sanity check with CC="cc". -> Performing CC version check with CC="cc". ERROR: The kernel header file '/lib/modules/2.6.22.9-desktop-1mdv/build/include/linux/version.h' does not exist. The most likely reason for this is that the kernel source files in '/lib/modules/2.6.22.9-desktop-1mdv/build' have not been configured. ERROR: Installation has failed. Please see the file '/var/log/nvidia-installer.log' for details. You may find suggestions on fixing installation problems in the README available on the Linux driver download page at www.nvidia.com.