Any ideas, anyone???

Just purchased a 98 750 and I can't get the NAV to work. TV works fine.

I have one CD (northeast US) and the manual is written in German.

When I try to turn it on, the first pop-up message says "please wait" followed by "no cd, please insert" along with an arrow pointing to the left (I think) and the message "return."

Meanwhile, the trunk unit is ejecting the CD. And by the way, which way should the CD be inserted? Label facing up or down? I've tried both ways to no avail.