Hi, I'm thinking about ordering the 17" Macbook Pro and wondering if anyone has had any experience running it with an external display as a second monitor. The 330M only has 512Mb of RAM which worries me for a 1920x1200 screen to begin with. Does anyone run it with a second display? If so, what resolution do you use and how smooth is window dragging and video playback? I plan on editing video in After Effects using both the screen and a 1680x1050 external monitor but I'm worried it may lag due to the not so great amount of video RAM. Does anyone have any honest, non-salesperson, real-world experience on the issue?