Easiest way to upgrade my onboard NIC drivers on a machine without connectivity?

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http://unix.stackexchange.com – I was assigned a workstation where I work and I needed to install Debian on it. I chose Wheezy because the other machines I use also have it, but I ran into a problem. The workstation is a Dell Optiplex 990 (I should've opted out of it.), and it has the following ethernet card on it: $ lspci | grep Network $ Intel Corporation 82579LM Gigabit Network Apparently, the stable release of Debian 7.1 does not support this driver. The best way to update the more up-to-date version would be to just compile the newer driver. This is where my trouble begins though. To compile the driver, I need a (HowTos)