I am wanting to get an iMac but I want to know if it can act as a monitor for an Xbox 360 in HD. I am assuming that the minidisplay port + VGA adapter, then using the VGA cable for my Xbox 360 will work to get the video running on the Mac. I use a headset, so I'll just use the optical audio for my headset out of the Xbox VGA cable. Has anyone tried this setup, or something similar to it? Is their a delay through the adapter? Is there other methods to make this work? THanks for any advice.