Windows Movie Maker....POS

I am currently trying to make a high-quality film, but Windows Movie Maker is not cooperating. When I was in the middle of editing, an error screen came up and then my computer froze. I would like to throw my computer out the window right now. My task bar dissappeared, Movie Maker is trying to restart, and nothing happens when I click the red X. I can't wait to get a Mac and FinalCut.