Super Mario Rpg Legend Of The Seven Stars - help

I am stuck at booster's wedding but i can't work out how to run, and knock the door off it's hinges smashing down, and then i am with bowser doing it, please help me, give me a hint. I tried everything all I want to know is what button actually makes you bloody run, for Christ sake, gees if i could just run i'd finish that darn level in no time, it really is pissing me off.this could also help others with the same problem so if you have advice post it here, please i am begging of you.-----------------------------------------------------------------------------------------------------------------------------------------------mrsmes

Run at the door at the same pace as bowser, when he charges, you run at the door

press Y+the direction your running makes u run