You havn't specified which game so ill list them:
The 8th gym in Pokemon Yellow is situated in Viridian City. It is the second city you encounter when you first begin your game.
No.
Pokemon Yellow is for the Game Boy.
you can not find it in Pokemon dimond .you can only get it on all the Pokemon game boy advanced games
Yes it is. It doesn't transfer, it copies.
every Pokemon that is in that game boy game
I am 100% sure you can not transrer Pokemon from game boy color to your game boy advance. trust me you can not. I tried.
You don't really.You have to migrate it over from a game boy advanced game.Not game boy color.Or if one of your friends got it you can trade ok!
i think you need to beat all the gym leaders first.
You find it at Route 2, which is north of Viridian City.
It is impossible to download a game-boy game onto Pokemon platinum
yes you can