Well my best suggestion is going in to youtube and typing in pokemon soul silver action replay codes and click on the one that has the person as ghostbomb5 and go below and click on the link and then scroll down to pokemon platinum
What The Action Replay Code To Platinum For A Dark Ball?
Dark Ball 120747B2 0000200D 120747B6 000076C8
You pick a Chimchar at the Begenning of the game and evolve it at level 14 to Monferno and the evolve it in to Infernape at level 36 or get on wi-fi and trade for one