Dual monitor not working help

i just received my i7 920 computer today and i got the radeon 5770 1 gb graphic card
after installing windows 7 ultimate i tried to set up the dual monitor
and under display it only recongizes 1 monitor while the 2nd monitor does what im doing on the first monitor how can i correct this??
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More about dual monitor working help
  1. so its mirroring?
    check for any settings saying 'extend desktop'
    also...
    make sure you have the latest driver updates
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