Load movie();

i hear by have small query on action script
i have 4 buttons in a interactive page , 4 buttons named as
tooling, quality,
and contact us ,
in this the buttons are act as a checkbox,we can select 2 or 3 buttons at a time , when i select for example if i select profile and contact us and click on button named playselected it must play the profile movie first after its end the contact us movie must play.the movie is a flv file
can u give me some idea how to load the movie on selected buttons.