First off, the coding is pretty. * w*
As for the story itself, I should say that you're not allowed to change the titles of your threads here at PokéCommunity. So if you're going to make a Chapter Two, I'd just go ask Astinus (the moderator here) if the thread title could just be changed to "Pokémon Uesuto" so that the title doesn't get outdated.
That said, I really do like the Western setting (doesn't help that I started reading this fic with Jesse James playing, but still) as well as this kid protagonist. He's pretty awesome, actually. That said, I believe that the title 'Pokémon _______' makes the story sound like some generic Trainerfic that we're all sick and tired of, so I'd reconsider that as a title. (It worked on me, at least.) Since we're only partway into chapter one, I can't say much else except that I really like what you've got playing here. Keep going. C: