Installing Nvidia card to Linux

one of main problem in after installing UBUNTU is installing gaphic card driver. if you're using latest Nvidia external graphic card. most of the time the linux driver should be installed. sometimes the .deb s in some repositories might not work. if you haven't got internet connection
there is a way to install Nvidia driver.

first you must download the .run file from Nvdia site which suit to your graphic card(ex: Gforce 8400)

then install all the packages which has 'libc' Header using ubuntu CD (Use Synaptic pakage manager)

then restart the machine go to Recovery mode (second option in the list)

go to the place where the .run file is located.(Use CD command

ex: if the .run file is on the desktop cd /home/user/Desktop)

then run the file (./Nvidia"Drivername is Here")

then continue the installation . (enjoy in linux THANK YOU)