I just wanted to update this post because i found an alternative way of making the integrated network adapater from the motherboard Asus P8Z68-V work.
(Since the *.ini trick didn't really worked out well for me).
Here is what i did :
1) Go in the device manager, and right click and select update driver on the the Ethernet controller.
2)Select "Browse my computer for driver software"
3)Select "Let me pick from a list of device ..."
4)Choose network adapters and click next
5)Click Have disk
6) Navigate to your "LAN\PRO1000\Winx64\NDIS62" folder and select the file named "e1c62x64.inf" and click open.
7) Click ok
8) In the (long) list of ethernet drivers scroll down until you find : "Intel(R) 82579LM Gigabit Network Connection
9) Click next
10) confirm anyother message and that's it !
This worked for me. Let me know if it worked for you guys !
Cheers !