When i’ve tryed to install the closed nVidia drivers, the installation exit with the seguent error:

-> The CC version check failed:
The compiler used to compile the kernel (gcc 4.1) does not exactly match the current compiler (gcc 4.2). The Linux 2.6 kernel module loader rejects kernel modules built with a version of gcc that does not exactly match that of the compiler used to build the running kernel.
If you know what you are doing and want to ignore the gcc version check, select "No" to continue installation. Otherwise, select "Yes" to abort installation, set the CC environment variable to the name of the compiler used to compile your kernel, and restart installation.