So here is what I am planning on doing. I want to get all my photos on the hard drive and just have the slideshows on the old imac and new imac (coming soon 27") So obviously I will have to keep the photos that are on the slideshows on the computer but thats like half the photos. So should I do what I read and just drag the "iPhoto Library" to the hard drive? Then what? Can I just open that on the new one and all the photos will come up? Now if I plug it into a different computer to I have to put the entire library onto the computer or will i be able to just get pictures from a certain event or along those lines? Also, I have the newest iPhoto and will the pictures still work with the older iphoto? Thoughts on what I should do?