Please find below more info:
nvidia-installer log file '/var/log/nvidia-installer.log'
creation time: Fri Mar 30 00:27:16 2012
installer version: 295.33
nvidia-installer command line:
Using: nvidia-installer ncurses user interface
-> License accepted.
-> Installing NVIDIA driver version 295.33.
-> Performing CC sanity check with CC="cc".
-> Performing CC version check with CC="cc".
ERROR: Unable to find the kernel source tree for the currently running kernel. Please make sure you have installed the kernel source files for your kernel and that they are properly configured; on Red Hat Linux systems, for example, be sure you have the 'kernel-source' or 'kernel-devel' RPM installed. If you know the correct kernel source files are installed, you may specify the kernel source path with the '--kernel-source-path' command line option.
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.