Im buying heartgold and soulsilver for me and my younger brother. I have a DS and he has a DSi. I havent played pokemon since the old red and blue ones.. i no back then you could connect two gameboys together with a wire to trade. Can you connect the DS and DSi together wirelessly or with a wire to trade/battle?? If its wirelessly does the DS and Dsi have wireless built in to them? Sorry if these are really simply questions but i dont really play them much. Cheers!!