Hi Guys, I've done a search but I believe my question is fairly unique. I have a mid 2009-2010 iMac 27" which I want to use as a monitor for my PC (for times when I want to play games). I went to buy a DVI to mini displayport adapter. I plugged a DVI cable into the adapter which plugged into the mac and nothing happened. I tried hitting command+f2, but still no luck I went to a mac shop and a rep told me that my model doesn't support it. he said only newer imacs and more expensive older imacs offered that option. so I'm puzzled now. is there absolutely no way to use my 27" imac as a PC monitor at all? help!