That's the reason why Microsoft now offers Windows Vista users a new and updated version of Windows Movie Maker for Vista.
Windows Movie Maker for Vista is a very good choice if you want to create your own video compilations and you are a novice, because its intuitive interface is amazingly easy-to-use.
No matter if you are by no means an expert in video production or editing, you'll be very happy with the output and will continue to use WMM as your video editing software of choice. Import videos and photos, add music, mix different video formats, transition selector, more than 20 different effects, narration supported,...
Remember it's totally free so it becomes a really good choice to get started in video edition.