So I've got myself a nice little 27 inch imac. I want to use it as a display for my Xbox 360. I've got the VGA to mini display port adapter. The problem is that once I connect it all up, and turn on the 360, the xbox 360 video (or audio) doesn't come up. The screen just changes resolution (which I understand is it going into target display mode). I've been looking through other sites and what I've been led to believe is that as soon as I connect the 360, the imac should just enter target display mode and the Xbox 360 visuals should just come up on screen. This however is not the case. I've looked through the display settings and still no obvious solution. So can anybody help me out with this problem?