Remember now that Windows movie maker is a program purely made for arranging clips, adding low quality text and premade low quality transitions. You won't be able to make something out of the blue because thats not what it was made for. Sony Vegas on the other hand is a professional program intended to extend the boundaries of Windows movie maker. Sony Vegas includes over a hundred more file extensions, has way more tools, and allows customization.
I'm not sure what exactly your intending of doing but you first need to know the basics of Keyframing before you start anything.
Embedded vimeo videos will not play in HD because I don't have a paid account on vimeo. Click on the HD button to view the video in HD on vimeo's site if you so choose to do so.