Image Uploader

Is it possible to make an image uploader in Flash similar to that used by Facebook (i.e. user browses to folder and then thumbnails of images in that folder are shown and user selects or deselcts which ones to upload). If that isn’t possible what about dragging photo files onto the swf and having them be selected for upload. And as a last resort, what about showing thumbnails of the pictures selected using FileReferenceList.browse().