Today the Final Version of Windows Live Essentials has released. You can get Windows Live Essentials, including Messenger, Mail, Photo Gallery, Writer, Toolbar, and Family Safety, all for free from http://download.live.com. (Windows Live Movie Maker is also available, but remains in beta.)
You can download it from http://download.live.com. These can be installed via single installer that lets you choose which programs you want to install. It will upgrade the programs if you are already having the previous version.