I'm kind of new at this too, but what I did is click the "Go Advanced" button then the "Manage Attachments" Button. A window opens up and at the top of it there is a place to browse your computer for the photos. Just make sure you have sized them to smaller than 800x600 first. I still don't know how to place captions under each picture. May be someone else can give an answer to that one as I would like to know.