[CentOS] CentOS 7 32-bit WiFi Hardware Switch

I recently installed CentOS 7 32-bit on a Dell Latitude 620 and my WiFi 
doesn't work. The software setting show me stuck in "Airplane Mode" and 
I need to activate my WiFi with a "hardware switch" I am new to Linux 
and need some direction here. I believe the wireless card is an Intel 
Pro/Wireless 3645A/G.

Thanks,

Tim