<<_attachMovieClip>> vs <<_duplicateMovieClip>>

[FONT=Tahoma]HI,[/FONT]

[FONT=Tahoma]ANYONE CAN HELP ME TO TELL THAT IF IT IS WISE TO USE _attachMovie or _duplicateMovieClip in a game.Actually I am creating a vertical shooter game in which the missile will fall in the vertical direction from the top 2 d bottom-line in certain Intervals.It is this where I need to attach or duplicate d _mc…So anyone can help me out in using the right 1…[/FONT]

[FONT=Tahoma]Thanx in Advance[/FONT]