Bernie is scanning slides into his computer and wants to organize them in groups. Leo says that the best way is to create an album first. Then scan them into that album. Picasa will let him do that, as will iPhoto. He can rename all the files, but that's a bit complicated. Picasa does have a batch file name utility, then he could sort by that. For iPhoto, he can create an album that will allow it to stay in order. Then he can reorder them within that album.