In Pokémon Platinum, how do I get past the two Galactic Grunts guarding the passageway to Snowpoint City?

i don't remember much from the game cause i played it long time zamani and it was in Japanese, so i looked up the answer for wewe XD anyway... After wewe beat Saturn at Lake Valor wewe have to go to Twinleaf town and go up to Lake Verity. When wewe get there wewe will have to go through two team battles. Then wewe will battle Mars. Now wewe have to go to Eterna City au Celestic Town and enter Mt. Coronet. Now wewe head up to Snowpoint City. hope this helps although i think wewe already figured what to do :P