Load swf in flash site onLoad

I have built a full flash website per the kirupa tutorial. on one of the inside pages, I want to load a pre-built flash player that I have the source fla and completed swf for. I think that I need to use loadmovie for this, but where do I assign the action script–on a frame, on an empty movie clip? and how do I make the movie load when the containing swf loads, and not with an event handler like the release of a button.