Change MAC Address in VIX 3.0

[eamo]

I tried following this guide but its not for vix http://www.world-of-satellite.com/sh...ac-Address-PDF

I need to chaage the mac address because i just bought a second ue box and it has the same mac address as my first box. when they 2 are on the network at the same time they both drop off and on the network

but once i unplug either box from the network its fine. i can see on my router that the 2 boxes have the same mac address so this is causing the problem.

so how do i change it?

thanks