why my wifi is not working?

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http://www.linuxquestions.org – i have recently installed centos 6.4 with kernel-2.6.32-358.el6.i686 kernel-firmaware-2.6.32-358.el6.noarch now i want to run wifi but i could not turn on even wifi button so will you please suggest me any suggestion ...do i need to install any driver and suggest me how to install because there is no internet in centos so how can i install offline thank you!!!! (HowTos)