For some reason, the most recent versions of Movie Maker for Windows Vista and 7 don't have all the features and transitions you can find on earlier builds.
One developer decided to take matters into his own hands and create a portable version of Windows Movie Maker based on Movie Maker 2.1. You can run Portable Windows Movie Maker on any computer with Windows XP, Vista, or 7. Since it's portable, you can run it from a USB flash drive or a folder on your hard drive without installing it.
Movie Maker, being a Microsoft product, only supports WMV as output format. If you want MOV, then you'll need a third party application."