You insert the protective screen UNDER the silicone
opening. There's a user's manual on the zCover web site.
http://www.zcover.com/IMAGES/iPod/nano/nanoback_USAblue.jpg
I hope you have better luck with your zCovers. I had
to take mine off my nano. It was impossible to use the
hold button and half the time the click wheel didn't
function because of the thickness of the rubber.