How can I "convert" or add an input onto the Navi screen so i can hook up a dvd player, xbox360...etc?

And if anyone has any experiance with this let me know what you did and how you like it.

Thank you inadvance
KP

 

I've never touched anything that new but im guessing it's also part of the radio? If thats the case, why not get an aftermarket unit (double dinn) and swap it so nothing happens to the stock unit. I mean if theres no plugs in the back to hook anything up, that is. If there are plugs behind the unit, have at it.