Hollow ataraxia and how to play the original.

Before anyone comes and says just buy and play the steam version. I have bought both stay night and hollow ataraxia. To support the creators of Fate

I'm just started Fate Realta Nua ultimate edition.

I wanna read the original how it was then I want to read hollow ataraxia how it originally was.

Now I just need to help on acquiring hollow ataraxia how do I go on doing that. I found the patches easy enough but the game is no where to be seen.

Any help whould be greatly appreciated.