Well I usually refrain from using it since it isn't that great, but I needed it for something. When I went in to put a video together, it said all the files for transitions and effects were missing. Now since this isn't something I can just re-install like Halo, I wasn't sure what to do. Does anyone have a solution to this? And if not, are there better programs out there I can get for free for a Windows XP that will do the same thing as Windows Movie Maker?