hi...I see madzigian has already provided you with some great 100% dynamic code..

this will just be an explaination of what your doing..

basically what you are/need to do is load your external content (.swf, video, image) into a 'container clip' which is nothing more than an empty/blank movieClip.



this is known as loading into a 'target'.. (alternately you can load into a _level but not recommended in most cases)

so what you do in 'check' the containerClip periodically to see how much of the external content has been loaded.