Olympus Stylus Tough 6020 > Windows Movie Maker. HELP!?

I have an Olympus Stylus Tough 6020 Digital camera. It is 14 megapixel and shoots full HD 720p video. I have a whole bunch of skatyeboarding videos I wish to import into Windows Movie Maker and edit them. When I try to import ANY video from this camera, the folder shows up blank. I have tried using converters on the videos, but even when I try to import them into a converter, the folder shows empty. Any help will to ! please post response or email me at topteddy@hotmail.com ! THANKS !