Just got myself a fully-specced out 13" Macbook Pro retina, which is the smallest Macbook I've ever had, but I'm keen to have the portability that the 13" offers. I do a fair bit of design though, so it's not ideal on that front, and I'd love to be able to use my old iMac as a monitor for my new Macbook Pro. A bit of research suggests that this is only possible with thunderbolt equipped iMacs, or is there a workaround? I did find one site that describes using Target Display Mode and the Mini DV port... Can anyone confirm here whether there is definitely a way of doing this? Many thanks.