WINDOWS MOVIE MAKER HELP!?!?

Hi, it's the video codec issue. avi is a media container which can be encoded with many different codecs, so windows movie maker just supports some special avi videos, as I know, WMM supports wmv or mpeg2 videos well, so you need to use a good software to convert your avi videos to the wmv or mpeg2 videos for WMM. I am using RZ Video Converter which can convert any videos or audios between different formats with good quality, such as convert avi videos to the wmv or mpeg2 videos for WMM, etc. yahoo or google search and download RZ Video Converter, hope it can help you.