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Question: How Does This Junk Work?!

I've had this little keychain for a while now, and I haven't had any success at turning it on... What, do you hold the "ON" button or just press it once?? I don't get it... also, mine didn't come with some disk or whatever to transfer the photos. No program is poping up when I plug it in either. Where can I go to directly download the softwear for this cruddy mechanism?? Help!