1. The Taskbar reloaded: Windows 7's version of the Taskbar is less cluttered than Vista's, and it handles both running and nonrunning apps with equal aplomb.

2. Slicker, quicker Taskbar Previews: Now they show you all of an application's open windows, all at once.

3. The convenience of Jump Lists: These context-sensitive Taskbar menus let you start accomplishing things in applications before you even open them.

4. A System Tray you can love: New controls prevent the System Tray from overflowing with unwanted apps and distracting you with unhelpful, irrelevant messages.

5. A more media-savvy Windows Media Player: Love Apple's iTunes Store but hate iTunes? New file-format support enables Windows Media Player 12 to play back unprotected audio and video from Apple's online store.

6. Alerts via Action Center: Windows 7's version of Vista's Security Center queues up system messages so that you can respond to them on your schedule--not when Windows feels like interrupting ...more

Windows 7 has better ways to find and manage fileslike Jump Lists and improved taskbar previewsto help you speed through everyday tasks. It's designed for faster and more reliable performance, so your PC just works the way you want it to. With 64-bit support, you can take full advantage of the latest powerful PCs. And great features like HomeGroup, Windows Media Center, and Windows Touch make new things possible

More security enabled,no need(in max. cases) to install chipset n audio driver,good look(visual style).