GeForce 8400 GS NVIDIA Drivers Installation (Noob Status)

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http://askubuntu.com – I am very very new to this OS and I don't know much of the Ubuntu/Linux terminology. Can somebody help me install "GeForce 8400 GS NVIDIA" drivers on my Ubuntu 12.10./32bit. Please be very patient with me and use very simple words that a simple newbie could understand. Thanks guys, stay blessed. -Ry (HowTos)