How to Install VGA Driver (NVIDIA GEFORCE G102M) for Notebook (Asus K40IN) in Ubuntu

#step 1
download driver at NVIDIA
#step 2
enter text mode or press CTRL+ALT+F2
#step 3
log in as root or use sudo command
#step 4
turn off GDM "sudo /etc/init.d/gdm stop"
#step 5
back to driver directory
#step 6
type "sudo sh nama_file_driver.run"