Publisher 2003 Stacking/Send to back

In Publisher 2003, I am trying to make a few graphics for a flyer. I want to make a fence, so i made 10 vertical picketts, then two horizontal rails. I need the rails to show between the picketts (be behind the picketts), and cannot find out what i am doing wrong. Nothing can be done via "order", I cannot get into the color and opacity screen , and wonder if my trpical gift and being counter-intuitave is at play, or if I simply have a box clicked wrong, or what.