Problem With Windows Movie Maker?

Whenever I try to create a movie involving.mov fiules the error symbol comes up, and it said the problem was that.mov is by apple so windows movie maker does not support it. It said I need to download QuickTime by apple, but I don't think you can do editing on it:/ Is there any way I can make my.mov able to be used in Movie Maker? I tried renaming it once, but then only the audio would come up, and not the video. The video was shot on my Nikon camera, and this happens every-time I need to use Movie Maker. My friends have the same camera and SD card, but they don't have this problem.

Convert those videos into suitable format which movie maker support

All in all, you're better off using Videopad then Windows Movie Maker.