Hello,

(please understand I'm a total newbie...) 2 days ago I got my first BMW. It is a '04 ///M3. It has the NAV system, but I barely understand how to use it as I'm still getting through the manual. Some of the questions I have may seem rather elementary but,...How do I know which version of the nav o/s I have? What are the advantages to updating it if needed? Does the CD or DVD I found in the trunk NAV/DVD player need to stay in there? What does it do? I also want to learn how to play my ipod through the Stereo/NAV head. Any comments or suggestions are welcome.

Thanks in advance,
J