Flash CS3 simple (?) key hitting game. Help needed please n_n

Hello,

I am trying to make what I thought would be a simple game where the user hits 2 keys as fast as they can to make an object grow. They have 30 seconds to accumulate as many points as they can. I use flash to animate but have never made a game.

Please could anyone help me with the code?

Also I was wondering how to make a high scores page too. Is this possible?

I am using Flash CS3 by the way.

Thanks for reading!