The CD slot is behind the nav screen. The screen has a motorized tilt mechanism that tilts out to reveal the CD slot behind it, and tilts in to park the screen in its default position. The tilt is activated by pressing the upper rightmost button on the screen bezel.
I would also recommend calling the dealer to make sure they order it with the CD player, as it can also be ordered with a cassette player I think. And Lord knows you wouldn't want that!!!