I have about 2,000 photos on iPhoto on my iMac (desktop computer) that I haven't exported yet. I want to move them to my MacBook (laptop computer) using my 8 gigabyte flash drive. The photos are organized on iPhoto in groups of when they were imported onto the computer (The first group, for example, is from January 10, 2007, the most recent group is from last week). How can I move them to my MacBook but still keep them in the same groups, and in order of when they were first imported? Thanks!