WMM displays naruto episode upside down?

can any one plz hlp me with this problem? I can't make an amv if the video is upside down when i play it in wmm. Btw the naruto eps are in avi. Do i need a certain codec or something or maybe a converter. Also i can imported the avi files in WMM, but when you play it, the footage flips upside down. Can any 1 plz hlp!