Hi all, haven't been able to find a proper answer to this on the net yet so here I am. I've got a 2010 27inch iMac and have decided to go back to gaming. But I don't have space for 2 monitors on my desk so I'd like to use my mac as a monitor. I read that it should be possible with the 2010 iMac but it's not clear to me as to how? I'm not so tech savvy so I need clear instructions Many thanks.