My specs:
Mavericks 10.8.2
Belkin N300 dongle (F9L1002au) - Realtek RTL8192SU chip (i think)
Asrock X79 Extreme6
32gb Corsair Vengeance - 1333Mhz DDR3
Geforce GT610
LG Flatron W2343T

I've tried getting the onboard ethernet and N300 dongle working with no luck. I have no services available in my Network Preferences.
I tried using a couple of different controllers from the Realtek site (they came as installer.pkg's) but it comes up installation failed contact hardware vendor. I also tried installing the RealtekRTL81xx.kext both with MB and Kext wizard. Attempted running the uninstall shell script, removing all realtek kexts from S/L/E and reinstalling to no avail.

I'm outta ideas, does anyone have any suggestions?

Thanks