I have an old school Mac (Tiger 10.4.11) and am trying to hook it up to my Insignia TV to watch movies. I've purchased and hooked up: -DVI to VGA adapter - VGA cable It all hooks up, but I have no idea what to do next? I assumed my tv would auto-recognize the input, but nothing other than a tv show appears (cable). Do I need to do anything on my computer or TV to have my computer display who up on my tv? I'm not tech savvy, at all. Would appreciate the help Thanks so much.