My rev b iTang was in a bit of an accident. I am now thinking of upgrading to a PowerBook. This also means upgrading from Os 9 to 10.x. This is an expensive process, as most of my software licenses are no longer upgradable. I think that I am going to go with a 12in PB, but I want to know if the video is scalable. If I use an external monitor is it just the 12in screen blown up, or can I run the monitor at a different resolution. I hope to plug it into a 17in Planar LCD at home. Any input would be appreciated.