Hi, So I am all ready to purchase a 2004 Honda Accord EXL V4 with navigation. The question being, how hard would it be to get the Navigation system to start playing DVD's? And would it have been really hard for Honda to do it in the first place? How much would the whole deal cost? The Accord that I am buying is with all the standard options that were provided in a 2004 Accord EXL V4. Thanks.