Some translations I did. It's a little liberal in some places, but the general gist of it should be the same.
Leaving Silent Hills:
>Waidasec! Stop! St-op, I said!
Blue shows up.
>Blue: You don't know a damn thing! Wild Pokemon attack in the grass! You can fight if you had a Pokemon of your own... Hold on... You... Come with me!
We go back to Oak's Lab.
>Blue: Gramps! I brought him here!
>Oak: Thank you, Blue!
>Silver: Professor Oak's this grandpa...? Ack, sorry! I mean, this old man? It's the first time I've ever seen him!
>Oak: Correct! I am Professor Oak! And don't call me grandpa! I was the one who called you two here! Would you hear my speech?
[YES]
>Oak: One year ago, in Kanto, I gave two children, just like you two, a Pokedex to help with my research. They've done a wonderful job! They found 150 kinds of Pokemon, and succeeded!*
>but...
>sadly...
>the world is vast, and among other places, new Pokemon have been spotted like wildfires! As such, I moved from Kanto to Silent Hill to study in different areas, so that I may find new Pokemon. ...
>To further my research, my son, and assistants have helped out. But it's still not enough! Ethan! Silver! Lend me your strength, so we can further our Pokemon Research!
>Silver: This is starting to sound fun, Ethan!
>Oak: Follow me, you two!
The three of us walk to the inner part of the lab
>Oak: Over on the desk are three Pokemon. Ho ho! I will give you one of these fellows! Now choose!
>Silver: Hey! Me too! Old man, please give me one too!
>Oak: So restless, Silver! You can also choose whoever you want!
[Pick Happa]
>Oak: Oh! So you want the grass Pokemon, Happa?
[YES]
>Oak: This Pokemon is very energetic!
>Silver: Then I'll use this!
Silver gets Honoguma.
>Blue: Back then, I was also a Pokemon Trainer. You kind of remind me of the kid who taught me to stop being so egotistical. Thanks to him, I've learned to love Pokemon and help gramps with his research. ...Anyway, here's the Pokedex!