I'm about to buy a an external screen for my iBook too. Just to clarify - will Screen Spanning Doctor mean I can run the screen at resolutions better than 1024 x 768? I'm not interested in multiple screens, just one good one. On a related point - for complicated reasons I won't get in to, the screen has to come from PC World (I'm in the UK). Are there any sorts/brands that won't work with iBooks, or can I just get what I fancy and plug it in? (I'm not going for anything exotic, just a 15 or 17 inch TFT). many thanks Matt