Thanks for your help cancerinform

The working code is as follows, if anyone needs the files contact me and I will send them on.

//import for the tween
import caurina.transitions.Tweener;

//load the external swf
var externalSwf:Object;
var myRequest:URLRequest=new URLRequest("orange.swf");
var myLoader:Loader = new Loader();
myLoader.contentLoaderInfo.addEventListener(Event. COMPLETE, grabContent);
myLoader.load(this.myRequest);
addChild(myLoader);

//when the swf is loaded, the tween is initiated
function grabContent(event:Event):void {
trace("swf has been loaded");
externalSwf=event.target.content;
Tweener.addTween(banana, {x:-900, time:1, transition:"easeInCubic", onComplete:nextBuild});
}

//when the tween is complete, play the swf
function nextBuild() {
trace("the tween has completed and has initiated the nextBuild function");
externalSwf.gotoAndStop(2);
}
stop();