I said use your Pokemon from D/P and they gain levels*. Then you have to beat trainers to get to the Leader.
*: D/P Game in DS then use wireless communications to transfer Pokemon from D/P to the PBR game in the Wii. Use those to battle trainers and gain EXP from those battles. This DOES NOT apply to Rental Pokemon.
Hmph.
Nobody's gonna stand in my way.