Download Windows Live Movie Maker: http://explore.live.com/windows-live-movie-maker
Buy Corel VideoStudio Pro X3: http://www.amazon.com/Corel-VSPRX3ENMB-VideoStudio-Pro-X3/dp/B002J9PO2E
In this video I go over two good video editing programs for Windows including the free option Windows Live Movie Maker as well as a good paid option Corel VideoStudio Pro X3. If you just need something simple to do a few cuts and add some music then Movie Maker will work just fine. On the other hand if you need something more in depth I recommend VideoStudio as it should be able to handle most any video editing you need unless you have a specific need for a program such as Sony Vegas or Adobe After Effects.