First what u need to do is get your open your movie file with Movie Maker.. First go to File, Import Movie into Collections, and navigate to your movie file... (You can also insert other things... such as a picture sorta like a personalized splash screen but you do that first by clicking Import Pictures and put ur screen in but this has to be done first, otherwise you just get audio) and drag and drop the files into the storyboard below, then it Ctrl P which will save, and choose My Computer, and since YouTube's limit is 100mb, make sure your movie is less than or equal to 100mb (and less than 10 minutes worth of film) it may be necessary to drag down parts of the vid and encode each piece by piece and upload them to YouTube and label it part 1 and such.. for the respective movies.. now depending on your processor and RAM, your speed may vary...