Should I install additional drivers?

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http://askubuntu.com – I'm newbie to Ubuntu. I have a laptop. This is designed for Windows 7. Anyway I want to install Ubuntu here. I used Ubuntu Server several times, but all in the virtual machines. So installation on physical machine is first time now. In Windows 7, I had to install many drivers to make it perform well. For example, Intel's chipset driver, storage driver, NIC driver, and Atheros' WLAN driver. Actually WLAN didn't even detected without the driver. Should I install something like that driver on Ubuntu to make it perform as its designed performance? How about WLAN? I can't figure out how can I ma (HowTos)