This is the first Thing that I couldn't do everything I wanted to on my work computer; the Microsoft Live Movie Maker requires Vista or later, and my work computer is still on XP. My home desktop and my laptop are both on Windows 7, though, so I still had options.
Once the rain finally let up a bit, I was able to take my camera and wander around my back yard. Uploading from my camera is pretty easy; it has a USB cable, and Windows will pop up an import wizard for it.
Movie Maker was easy to use for basic functions - I didn't dig into the sub menus much since it was my first time using it. Browse for a video file, add the music file, add some words. I minimized the movie sound so that hopefully all you hear is the music. (It's hard to tell here since my husband has music playing in the room.)