You created your own movie in iMovie but you can't figure it out how to save the darn thing into a playable .mp4 file on your hard drive. I've been there, let me show you how to do that.
You can upload and import any MS Word document file to Google docs/drive as you can download and export a Google docs document to you computer and open it with MS Word.
In this tutorial, i will show you how to install Movie Maker on Windows Vista or 7. For those systems is recommended Live Movie Maker, but some users more like older version.