Ok, Here's what I have and what I did...
I have a Dell D620, 945GM Graphics, Intel BCM5751 Ethernet (at least, that's what worked on Lion)
I have followed the steps for Phase 1 from Herve's instructions... but here is what I did.
Using my VM ML Install, formatted a 8gb Thumbdrive for Mac OS Extended (Journaled) Ran MyHack and selected "Create OS-X Installer" (after entering my sudo password of course). Selected my freshly formatted thumb drive labeled "installer" Located the install app "Install OS X Mountain Lion" (this is rev 10.8) Then I let MyHack do its thing... After complete, I restarted MyHack and selected "Install Extra" Navigated to the unzipped folder for the "Extra_D620i_lores_ML" and again let MyHack do its thing... Ejected the thumb drive and booted my D620 from it. I had Lion installed, but I went ahead and erased the HD to do a clean install (I didn't have anything I needed to keep on there anyway as I'm pretty new to this). Let the installer do the install... Selected a custom Extra folder at the end and pointed to the "Extra" located at the root of the thumb drive... Let Installer complete (with failure but that's okay!) Reboot system onto ML/HD Install.
At this point, I was able to complete the 1st boot setup, but I had no network connection. I checked the Network Utility and it doesn't show a Network Card installed.
I rebooted using -v and saw the following error during the boot:
kxldcom.apple.iokit.AppleBCM5751EthernetJ: The Mach-O file is malformed: Invalid magic number (0xfeedface)
Can't load com.apple.iokit.AppleBCM5751Ethernet - link failed
Failed to load executable for kext com.apple.iokit.AppleBCM5751Ethernet.
Kext com.apple.iokit.AppleBCM5751Ethernet failed to load (0xdc008016).
I tried swapping the kext from my Lion install (since it worked) and got the same message.
I saw in a different thread where someone had some KP issues that were apparently resolved by updating the Chameleon Loader to V2248 so I thought that may help. I downloaded the Chameleon Wizard to my D620 (via thumb drive) and ran it, but was disappointed when I saw it failed to run because it needs internet connection.
So, can anyone see something wrong I'm doing??
Or, if I'm on the right track with the Chameleon update (thought the whole 64/32 bit loading issue may be the issue) any suggestions how I can update the Chameleon without Internet? Is there a more direct way to update without the Wizard?
Any thoughts are appreciated... in the mean time, I'm still plugging away trying to figure this out.
Happy Hacking!!
Greg