I have windows installed on another Hard drive, so I have LAN there, but in OS X I don't have LAN. Like I mentioned above, I found the correct kext for the atheros ar8121 and instaled it with kexthelper and rebooted, but nothing happened. Same thing happened with sound.
I'll download the Chameleon Bootloader in windows and then install it in OS X, but I'm sure I already checked the Chameleon Bootloader in the iPC install...

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