Live is not the same as installed
I'm only talking about this graphics card, only with 3.2.0-4 kernel, only with nvidia proprietary drivers
If everything is working fine, YOU ARE DONE, LOL
I doubt the newer antix can or will work with the proprietary driver because I doubt it can run the old kernel or old xorg server. I would get the NEWEST antiX 14.3 to try it with, not the 2nd one. If it can boot, my guess is the video will work out of the box with no xorg.conf at all. My old Dell 8100 can't boot it, but my others do well with it. Debian Jessie works on mine, but its very big and slow on the old machine, so you need a tuned version of it, like WattOS 9 will hopefully be, or Crunchbang 12 or antiX 14.x, but none of them are final yet, so keep that in mind if timing as well as stability is critical.