I tried connecting my MB with a sharp 45" LCD TV using a mini DVI cable and then DVI to DVI input on the TV, but I cannot get an image on the TV. My son connected a 5 year old work PC (company won't use Macs) via computer VGA to DVI on the TV and it was fine after some adjustment. Do I need to to get a DVI to MDMI to get the MB to work on the TV?