Is there a way to play DVD on my Nav screen?
is ther a way to disable the nav disabler so my wife can enter addresses in the nav menu while we drive?

I have done a search but have come up with nothing.

I could be wrong, but I think '00 nav systems are CD-based not DVD based. Does the Nav CD take up a place in you CD changer? If it is CD based, then you cant play DVD's at all