I am currently in the boat waiting for the Penryn upgraded MBPs. However, I had a question about using an external display with the laptop. Currently I have a 19" monitor that I purchased not too long ago for use with my desktop. I would like to continue using this monitor when I purchase my laptop, and I plan on running my laptop on my desk closed, hooked up to this monitor. However, when I want to take my computer somewhere (using the portability function of the laptop), what will happen with the display. The question that I am asking is basically, that my external display isn't widescreen, but the MBP display is. How does the transition work when I am switching from one to the other? Is there some way to run the laptop display in 4:3, or vice versa, run the external monitor in a widescreen resolution, or should I just simply remove my external monitor from the equation? I've not actually had any personal experience using a widescreen monitor/display, so I am unsure about how these things work. I really don't want to have one of the resolutions stretched in or squished when I switch between the two. Thoughts?