Set Asset Bundle position onces its loaded

OK I searched around trying a find a answer.
Using the basic Asset loading code, Loads the prefab with no problems.
However it loads the asset at the top of the screen, I added the script to a game object, put it did not change the position.

Is there something I am missing here to set the position once its loaded ?

function Start () {

var www = WWW (“http://localhost/chest_armor.unity3d”);
yield www;
// Get the designated main asset and instantiate it.
Instantiate(www.assetBundle.mainAsset);
}

http://unity3d.com/support/documentation/ScriptReference/Object.Instantiate.html

Instantiate has an overload that accepts an initial transform… use it.