I have a 07 honda accord with navi. it has a computer already in the car and the navi panel for the screen. i just need to know if i have to do anything more or upgrade the program thats already in the computer.....if anyone has any ideas it would be helpful....and also its stupid for me to put a laptop into my car and plug it in if it already has a computer in it.....

 

The "computer" that runs the navi is probably so stripped down you would not be able to run conventional programs on it.

If you're set on getting a "carputer" I suggest you look at aftermarket screens with RCA/VGA input and a location to put the actual computer components