Network Settings Missing, Can Not Connect to Internet

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http://askubuntu.com – When I go to click on NETWORK in the system settings menu, the only option I have is Network Proxy. The Wired Connection and Wireless connection options are gone. Also, can someone tell me how to get the firmware for a wireless connection? This is an acer Aspire 3690 running 12.04. I'm fairly new to Unbintu, thanks for any help you can provide! (HowTos)