HomeGroup
This feature makes files sharing easy. Connect two or more PCs running Windows 7, and HomeGroup automatically start sharing your music, picture, video, and document libraries with other people in your home.
Jump Lists
This one takes you right to the documents, pictures, songs, or websites you turn to each day. You'll find it on the taskbar and the Start menu.
Snap
Snap is a fast and amusing way to resize open windows, simply by dragging them to the edges of your screen. You can make the windows expand perpendicularly, take up the full screen, or appear alongside with another window.
Windows Live Essentials
It's complimentary software that includes things like e mail, instant messaging, photo editing, video editing and blogging.
Windows Search
This feature helps you find more things in more places and the speed is quite impressive. Type into the Start menu search box and you'll instantly see a list of related documents, pictures, music, and e-mail on your PC. Results are now categorized and contain highlighted keywords and text snippets to make them easier to scan.
64-bit support
All packaged retail editions of Windows 7 (except for Home Basic) include both 32- and 64-bit software. 64-bit processor makes the PC more responsive when you're running lots of programs at once.
Performance improvements
Windows 7 is designed to be quicker. It reconnects to wireless network more quickly; search results are faster and read the USB device in seconds.
Play to
This feature enables you to play music and video on other networked PCs, TVs, or stereos around the house.
Remote Media Streaming
This one provides easy access to your Windows Media Player 12 library over the Internet.
Windows Touch
Windows 7 is the first to incorporate multi-touch technology. All you need is a touch -compatible PC.
India Syndicate
http://techieinspire.blogspot.com
http://www.microsoft.com/windows/windows-7/get/upgrade-advisor.aspx
Hope this helps.