Hi, I am coming from a pc with a Blu-Ray burner (LG), and I want to use it with my iMac (2.66 i5, 2010). As far as I've seen, I need an external case. What should I consider? It should be firewire, right? Which type? Or should I buy an external drive? Thanks for your help. PS - I'm in Europe, by the way, I need to buy it in the E.U.