Just use (search there are plenty of them) an image importing plugin. The one below will take images from a FHG, add them to wordpress and do the work for you.
Quote:
This plugin takes remote page, examines its content and lists all found images for your choice.
Then you are able to select which images you want to import, add some fancy options such as re-size, rename, add your personal titles and more and then in one click to import all images into your wordpress media gallery and automatically create post with imported images in it
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http://wordpress.org/plugins/remote-...allery-import/