The problem with making a movie in Win MM is that it will never be a real movie, because you need to keep all the files on you're pc for it to work. So if you, for example, used a short clip, let's say clip01 and clip02, and make a mive and it's completed, then if you rempove that clip(01/02) it no longer works, even after you're movie is complete, you can find it in the help file i think of MM (or google). So others that don't have clip01 and/or clip02 will get an error or see nothing, even if you still have that file(s). Get a real movie maker like Cyberlink Power Director, or any other good tool.That way it will be an actually movie, and you can save them in a lot of file types.
If You Can Make It Then I Can Break It!