How can i manipulate movies i load with loadmovie()

Can anyone help me on this topic. I load 2 movies at the same time using loadmovie() function onto 2 different locations on the flash page. i would like to know if i can have a button in the second movie that can control, lets say play, the first movie when this button is released.

Please let me know if anyone can help me with this. thank you very much.