[ubuntu] Network Interface unclaimed

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http://ubuntuforums.org – The network interface appears to be unclaimed. I cannot do any updated or install any packages. This is so frustrating but i want to learn about LINUX please. If I need to edit some config files please forward me the commands and i will try and do my best. I ve been googling for the last 2 days just trying to get my network card to work. Ubuntu documentation is very basic. Ubuntu 10.04 is the version. Please help Windows Expert in stress. (Hardware)