从另一个SWF文件访问一个文件中的MovieClip

i am new to Flash and AS. I have to 2 swf file one in as2 and another in as3 , i have loaded swf file(as2) in as3 swf, its working but i need to access all the movieclip from(swf(as2)) and change the property(like style) dynamically . how can i do it .i am new to Flash and AS. I have to 2 swf file