So first your going to open up the Autodesk Inventor Software. Select the "New" icon in the top left hand corner of the inventor screen. Then select the standard.ipt icon in the screen that pops up. Once the screen is finished loading you're going to select the rectangle icon in the top left hand corner of the screen. Click once at any point on the screen and then click once more on the opposite side above or below your original point to create a rectangle. The rectangle should be green now. It doesn't matter what size your rectangle is, we are going to change the dimensions anyway.