In car dvd?

I got an in-car dvd player for xmas, i got a mate to fit it for me, but when i got home and put a dvd in and opened the screen, it says "warning! enjoy sound only while driving" i checked the book and it says that i need to connect it to the parking brake, but i dont want to do that, i no its all safety and all, but i wont be watching it while driving, is there anyway i can bypass this safety function, so i can see the image while driving ok for all u ppl giving abuse out there, its a touch screen one, so stop with all the crap
Answer
All you do is take the wire that is supposed to connect to the parking brake and wire it together with the ground(black) wire. this tells the unit that the brake is engaged.