Hello all,
Though I can't say much about how to get VGA working, I can say that as far as the zips are concerned, alll the graphics-related kexts in them HAVE NOT changed since the I itial release. Only additions/modifications to disk/pci specific kexts have been made. Could it be one of the pci kexts? Also, for those of you that have it working, what version of OS X are you on? I believe apple added/changed support for nvidia video cards in 10.8.4 which could have inadvertently changed our configuration.
Lastly, I am not sure at the moment if my VGA is working but will yes ASAP on Monday and report back. So far, I have had success using an eternal monitor with the full size dock and DVI.