hi i have a imac. i have the apple tv out adapter, but i can not get it to put anything out to my tv but fuz. i have tried everything. the strange thing is that when i'm in the ati tabs under the "display tab", no tv out displays show. instead there is "monitor" and "panel". the monitor icon is a crt and the panel icon is a laptop. is something broken? anyone know how i can get tv out?