I have a MacBook Air that I take everywhere, and I have loaded it with thousands of photos using iPhoto & Picasa. I need to move these older photos to a Seagate 1TB external hard drive somehow, then delete them. But I'm not sure how to safely do this and I don't know if I'll be able to use or alter the photos again later. Also, I have just purchased Photoshop Elements and I am very excited to begin using it, but the MacBook doesn't hold many photos. Should I download this new software to the external somehow (there is only one usb port on my laptop) and start using only the external hard drive to edit and save my photos? I am freaking out a little bit, b/c I have not been able to upload and take new photos with the sudden storage problem. Please help!!! How did you work around photo storage on your computers when you graduated from the occasional photographer to taking thousands of photos? Thank you for any help.