I can help u with ur platinum here.Here`s a bit of my walktrough:
When u choose ur name and gender when u move Barry will appear.He`l talk and talk...
When u move dawnstairs, ur mother will talk to you.Go in front of Barry`s house and go tu route 201.He wil talk and make u go in the tall grass.Prof.Rowan will stop u.Soon Dawn will appear with a braifkase.Rowan will tell u to choose a pokemon.When u choose, Barry will choose.Dawn and Prof.Rowan will be gone.Barry will battle you.Remember-Barry will be with the pokemon ur weak against
More-comming soon