I don't want to drag my laptop along to Africa, so I was thinking that a PDA might suffice. Besides the calendar and address book, I need to display images from my digital camera. The Zire 72 camera is cute, but probably won't be used until I return back to the states, so the concern is whether or not the JPEG images saved by my Panasonic to the SD card will be easily seen and organized on-screen. I want to be able to show my subjects a larger image than my camera can produce. A durable battery and MP3 capability are also helpful, and I don't want to spend too much money should the unit get lost or stolen.