Oh, wow, that IS ancient! It’s been a while since I’ve seen the older OS with iPhoto, but I think you can export the photos from iPhoto to the external drive. Make sure the external is formatted for Mac or if not spec’d for a Mac you need to format it using disk utility to FAT32 (just in case you ever want to read it with a Windows pc). Then you should be able to get into iPhoto, select the photos and export (maybe File-Export or iPhoto-Export??). If none of that makes sense or works, holler and I can do some research. My memory tends to move on with the new OSs