ubuntu 12.04 LTS Broadcom 3100 wireless issues

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http://askubuntu.com – So I installed 12.04 as a new install on a hp Pavillion AMD Athlon dual core 64 bit. I have done my best to work through a pile of assistance from various on-line sources, but none of the directions seem to take me from start to finish without some step that doesn't do what it is supposed to do. (I admit I'm somewhat of a Linux Newbie) Here's the thing: I have installed "Windows Wireless Drivers" and "bcmn43xx64" shows up as an installed driver, and under Hardware present it indicates "Yes" (it's a USB stick) but not only can I not connect wirelessly, but now my wireless connection has stop (HowTos)