Wifi driver install authorization

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http://askubuntu.com – Bought a Netis wireless adapter. It comes with quick install directions that only covers WINDOWS although the driver CD has a Linux driver. Tried to install the driver (which was zipped) and was told that I didn't have sufficient permissions to extract the file. I am the only user and the administrator for the computer. How do I get to the Ubuntu 12.04 permission screen to put in my password and gain authorization? (HowTos)