[ubuntu] WiFi connection to router inactive - Acer Inspire 1520

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http://ubuntuforums.org – Hello, I am new to the Forum and would be very grateful and appreciative of advice/help with regard to Wireless/WIFI connectivity to my router. I have a laptop Acer Aspire 1520 and having installed Ubuntu 12.04 for a friend to use, now find that the wireless connection hasn't been activated. To be honest I'm not surprised as a year ago, I bought a Leonovo from a seller of Ubuntu-ready laptops and on delivery, found the this problem and so phoned them up and they gave me about 4 lines of commands over the phone to be inserted into the Terminal as Sudo (ie as administrator). This fixed the pro (Hardware)