How to install Graphics card driver in ubuntu

                                                           One of the advantages of ubuntu is it has built in drivers of almost all hardwares.The thing u need is to just activate the driver!.
                                                           So,come back to our subject,How to install a Graphics driver in ubuntu?
1.Goto hardware driver menu

2.If the hardware is detected it will automatically activate the driver

3.If U r come with a new version of the hardware U may want internet connection,It will search for U through WWW! The things are so simple!