One of the first things you may notice about Windows 7 is that some of your familiar — perhaps beloved — applications are missing, such as Messenger, Mail, and Photo Gallery. Don’t worry! These applications are now bundled together into a suite (with some other applications that you might find equally helpful) known as Windows Live Essentials and are available as a separate, but free, download.
If you are missing some of your previous apps, you can easily install Windows Live Essentials, which contains the aforementioned and more, as outlined here:
Messenger lets you share photos and videos as you chat, as well as see the latest updates from your friends.
Make your own panoramas, slide shows, and movies and publish them online.
Turn your photos and videos into easily shared movies.
Windows Live Mesh
Keep photos and documents in sync between your computers and on SkyDrive (formerly Windows Live Folders).
Easily blog and include videos, photos, maps, and more.
Parental controls help parents keep children safe online.
Manage multiple email accounts, calendars, and your contacts, even offline.
See and comment on links your friends have shared as you visit Web sites in Internet Explorer.
Get search results from Bing without leaving your current Web site.
Outlook Connector Pack
Includes Microsoft Outlook Hotmail Connector and Outlook Social Connector Provider for Messenger.
Silverlight is a browser plug-in that enables interactive media (such as Netflix).
To install Windows Live Essentials, simply click Start, point to Getting Started and click Get Windows Live Essentials. The Windows Live Web page appears. Select your language and click Download to download the Windows Live setup. Select the specific programs that you want to install. Click Install.
Once the installation is complete, you can find the newly installed applications on the Start menu under Windows Live.