I'll keep this simple. On a PC, if lets say a friend sends me a picture of something, I can just open the picture, look at it, close it, and be done. But on a Mac, I have to download the attachment, wait for it to finish, open it, look at it, close the app, find and delete the file, and clear the download window. How can I just look at something like a picture without having to download it? Thanks.