if you want VIDEO on the front NAV screen, you need something more than just a DVD player.

you can do the OEM Tuner/Tv on Nav or Nav-TV Tuner, or there is the new Tv on Nav option (does not require the OEM TV tuner)...

read this:

http://tvonnav.com/bmwrgb.html

Had this been available, I would have selected this when I bought my OEM tuner...

TVonNAV Video Input System

Cost: $499 (much cheaper than the OEM systems)...