ANybody know how to get past the NAVI dvd blocker. I'd like to have the option to watch DVD's using the navi system

 

There is no blocker. Its physically unable to play movies, there is no mpeg decoder.

 

There's no software to play movies on it, plus I'd be surprised if the peeny little CPU they have in there could decode an MPEG in real-time. You could use the screen (low-res though it is) if you bought a separate DVD player that could feed video into it.