How to insert a video clip in the Action Script of a swf file?

hi:
i am very much new to this Flash CS4 and Action Script.
i am working on something which needs me to insert a vide file in the Action Script of a swf file?
how can i do that?? (if the video file is not imported to Flash CS4, is the procedure different??)

please let me know how to do this.
Advance thanks for the same?