I've decided to move from using iPhoto to using Picasa. Few questions, Where are all my iphoto pics stored? What folder? Can I just copy and paste that and move it into my new picasa, pictures folder? Also I back up my mac with time machine in an external harddrive. What do I do w/ those? Can I still access those pictures later on, even if I don't use iPhoto? Can I just click around in the ext hard drive and copy n paste onto my desktop?