I can't find my "Additional Drivers" settings on Ubuntu 12.10 [closed]

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http://askubuntu.com – I've dual-boot my Ubuntu 12.10 and I had my default 12.04 LTS problem, it is the Graphics. Usually I use the "Additional Drivers" to check out my "hidden" Graphics card. But after I replace the Precise with Quantal, I didn't found my "Additional Drivers" in System Settings!! I already download from Ubuntu Software Center, and after it finish I still can't find it. I search via Dash and it gives nothing. The icon in Ubuntu Software Center are already green-checked. My friend told me that needs to re-install the Ubuntu. I did it, it shows the same. So until now, my graphics is still "UNKNOWN" a (HowTos)