How to call a movie dynamically from library in CS4

How to call a movie dynamically from library in CS4 ?

I have already made a separate movie clip.
I went to advanced,
linkage
interface—“slider”
class ----“slider”

    base ----// it was disabled 

also it gives error even if i do not right anything on AS3
“Class or Interface not present”

Please explain from basic as I am child in CS4.