Well it was simple. I was overlooking the fact that each component has an array value. Once figured that out I am off to the races.
var myX = myDoc.pages.item(0).marginPreferences.left;
var myY = myDoc.pages.item(0).marginPreferences.top;
var myRec = myDoc.pages.item(0).rectangles.item(0);
myRec.move([myX, myY]);