Thanks for the links, but how do you install the game I can't figure out how.

Assuming that you've already extracted the game, you have to mount it with some virtual image program (I recommend DAEMON tools). Then go to Control Panel, Region and Language, Administrative and change system locale to Japanese. Then open the virtual image that you've mounted and click setup.exe.
Of course, I assume that you have Windows. If not, try playing around with Wine.

Thanks for the links, I hope someday someone translate this

Is anyone interested in extracting the script from this?