Rapidshare Windows Movie Maker Windows Movie Maker 2.6 And Player Problem?

Windows Movie maker 2.6 and player problem? - rapidshare windows movie maker

If I (a video file from rapidshare i import Download Windows Movie Maker 2.6 I have Windows Vista) the following message appears: The required codec was not downloaded automatically will download automatically check box codecs not selected in the Options dialog box.
What can I do to fix this problem? If I file in Windows Media Player is not working properly (works not only audio-video game)