Is there a way to hook up a external monitor to the 24" iMac as in the same way you can do with a macbook pro? Reason being is that I want the 24" iMac and I want to do photo editing. I'm getting mixed reviews on it due to the glossy screen. Some say yes and others say no. I have a 21 inch LCD display that I am not using. I was wondering if I can use it when I need to edit photos. I can't afford the macbook pro that I want so my next option is the iMac.