Surely I'm not the only guy who's wanted to repurpose an old iMac like this? I expected to find something on iFixit or one of the other teardown sites, but I haven't been able to come up with anything. I'm trying to turn my old 2009 iMac into an external display for my MacBook. I know that it can't natively do this, but surely there's a way I can bust it open and make it work. Right?