Mew can only be obtained through trading for it from a friend, obtaining 999 Pokemon in Pokemon Ranch, (You receive Mew from Hailey), or using a cheating device. Whilst you can only get Mew once from Hailey, you can get Mew more than once from trading and using the Action Replay.
You must Migrate from Sapphire, Ruby or Emrald.
There are no 'Grand Lakes' in Pokemon Diamond and Pearl, but there are the three lakes that have Uxie, Mespirit and Azelf.
Once you have saved all three lakes you have to go up to the top of mount coronet to the spear pillar. This is the same in pearl except with Palkia
sorry but you have to get another diamond/pearl/platinum game and trade the other starters from there.
you have to catch Palkia(in pearl)orDialga(in diamond)
there are caverns in the middle of the three lakes the three spirits appear there after you beat the Pokemon league.
yes it just stared airing in English
i reckon PLatinum. it has all the new features but doesnt allow some Pokemon to appear in the wild that do in Diamond/ pearl. but platinum also has even rarer Pokemon that don't appear in pearl/diamond. I have all three. YAY
Trade someone with Ruby,Sapphire,and Emerald.
Ruby, Sapphire and Emerald are the Generation 3 games. Diamond is Generation 4, with Pearl and Platinum.
you defeat team galactic in the area and save the three pokemon from cyrus
the three starter Pokemon are the same in platinum as diamond and pearl. They are chimchar-fire, piplup-water, and turtwig-grass.