I imported all my photos into iPhoto from a NTFS formatted external hard drive before I knew it was a NTFS drive and that the Mac wouldn't be able to write to it. So, I copied them all over to a new external hard drive that is FAT32 format so I can continue to keep my photos together. Now, iPhoto's library thinks they're on the old drive (as far as I know) and I'd like to tell it they're on the new one. How can I do that? Thanks!