i'm clueless about tv's. my boyfriend just brought home a big screen (how big or what model i have no clue) but it's an older one that has a wooden frame and the speakers are below the screen and it says mitzubishi on the front of it. when we go to plug in our dvd player it says we need an 4 digit input code. we can hook up cable and our vcr but not our dvd player! if anyone can help that would be much appriciated~!