I need some help with setting up external monitor for digital image editing purpose till I get iMac. At present I've a 24" monitor capable of doing UXGA resolution. I've got 13" MBP 2010. I normally use Canon Digital Photo Professional and Lightroom 3 for editing images from my Canon 20D. I like MBP 13 for this purpose but the screen real estate is too small for this kind of work. I've got display port to DVI adapter which I can use to connect MBP to external monitor. What will be best way to use both monitors for greater use of screen real estate ? Is it possible to set different resolution for external monitor than what is on MBP 13 screen (1280x800) ?