Hi,
I have a GA-Z77X-UD3H, I used the net-atl1e-1.0.1.14.x86_64.vib from here http://www.aligrant.com/?p=news/archive&v=2012-03
and the esxi-customizer found here http://www.v-front.de/p/esxi-customizer.html, but for some I don't know what reason I can't get the installer to recognise my Atheros 8151.
Did you do something else ( in the BIOS I guess) before installing the custom Esxi disk?
Thank you.