Yesterday this weird little box (see attachment) showed up on my desktop. I've been outfitting this new computer with lots of new software, so it's hard to say which program it's from, and I can't find any identifying text on it. When you click and drag it opens to show about 4 or 5 nature photos like you find as samples in your "my photos" folder when you get a new computer. I'd like to get rid of it but don't know how.

Justin