Tricky one this! rotate a movieclip! help :)

Hi guys first post so be kind!:)

Finding my feet with flash CS3 and need a little help rotating a some movie clips:

example code below:

}
end_holder._visible = false;
scope.createEmptyMovieClip("back_img",0);
scope.createEmptyMovieClip("card_holder",1);
scope.createEmptyMovieClip("end_holder",2);
end_holder._x=Stage.width/2
end_holder._y=Stage.height/2;
end_holder.attachMovie("endMovie","endMovie",0);
end_holder._visible = false;
ShuffleCards();
loadIMG(a_bg[Math.floor(Math.random()*bgNum)],back_img);
card_holder._x = 690
card_holder._y = 250
back_img._x = 690
back_img._y = 250

}

that went well! I forgot to add I want to rotate

scope.createEmptyMovieClip("back_img",0);
scope.createEmptyMovieClip("card_holder",1);
scope.createEmptyMovieClip("end_holder",2);

Can I use something like this

myMC._rotation += 15;

as you can see I am no expert! thanks guys!

Ok I managed to figure it out myself!!

}
end_holder._visible = false;
scope.createEmptyMovieClip("back_img",0);
scope.createEmptyMovieClip("card_holder",1);
scope.createEmptyMovieClip("end_holder",2);
end_holder._x=Stage.width/2
end_holder._y=Stage.height/2;
end_holder.attachMovie("endMovie","endMovie",0);
end_holder._visible = false;
ShuffleCards();
loadIMG(a_bg[Math.floor(Math.random()*bgNum)],back_img);
card_holder._x = 690
card_holder._y = 250
back_img._x = 690
back_img._y = 250
back_img._rotation += 90;
card_holder._rotation += 90;

}

:):):):):):):)