How to Install Firefox 12 on F14

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http://forums.fedoraforum.org – Google's Gmail advises I am running an old version of Firefox (installed ver is 3.6.24), and I should upgrade to a new version of Firefox to ensure new Gmail features will work with my browser. I've downloaded firefox-12.0.tar.bx2 to my desktop, and uncompressed it with tar xvf. I can't find any instructions on how to proceed, and I can't find the usual configure file to start installation. Can anyone assist with how to install Firefox 12 on F14? TIA, Jon (HowTos)