[ubuntu] Proprietary driver activation problem

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http://ubuntuforums.org – Hi,just installed ubuntu 9.10....however something's wrong.... it seems unable to activate my wireless driver (which is non-open source)Broadcom ST3.....when i go to "Hardware Drivers" and click on activate Broadcom ST3, ubuntu simply asks for a password and then does nothing! pls help! thanks in advance (Hardware)