Progress report - VL7.1-B1 32-bit, old P4 with GF6200:
Installed from burned disc and chose to disable boot animation.
Installed source pkg from untested.
Downloaded and ran NVIDIA-Linux-x86-304.116. The display was correct this time.
Installer worked as it should, first detecting nouveau and wrote file to prevent it from loading at boot.
Reboot and run installer again, it built module and created xorg.conf.
Reboot and nvidia was active. It even detected and automatically configured a dual display setup.
Things are improving.