ML_Lover

Just bought an 04 ML500 with Nav without disc and have never had this before, can anyone school me on how this works and what disk I need? I see DVD out there and on ebay but not sure what to get.

Also I've heard that you can replace the MCS with a Command system, any details on that? Does that allow you to connect the iPod or AUX stuff? What else is out there if I want video.

Thanks, any info is appreciated!