Well there is a website in the related links that's supposed to be good.
no
how to catch pokemon
No, there is no Pokemon game designed for you to play on the computer. Pokemon is strictly for use with Nintendo consoles and devices. However, there is an online Pokemon game called 'Pokemon Indigo' where you can play just like a Pokemon game, except online.
download a Pokemon platinum ROM
computer
it would matter what you are using to play it
Unfortunantly, you can't play Pokemon diamond on the computer yet. But you can play all of the Pokemon versions for the gameboy color online.
A Emulator
Go To www.PokeMaraldLOAD.com
Yes but i dont know how
Unfortunately, no. There are no Pokemon games that you can play on the computer. However, there are plenty of unofficial Pokemon games (in other words, not made by Nintendo) available for download on the web.
get it off of boycott advanced