Windows 7 Ultimate: this is the most versatile and powerful edition of Windows 7. It combines remarkable ease-of-use with the entertainment features of Home Premium and the business capabilities of Professional, including the ability to run many Windows XP productivity programs in Windows XP Mode. For added security, you can encrypt your data with BitLocker and BitLocker To Go. And for extra flexibility, you can work in any of 35 languages. Get it all with Windows 7 Ultimate.

Jump Lists - With Windows 7, Microsoft focused on keeping the things you use most right in front of you. One example: The new Jump List feature. It's a handy way to quickly reach the files you've been working with. To see the files you've used recently, just right click on the icon on your taskbar. So right-clicking on the Word icon will show your most recent Word documents. Plus, if there are other files you want to keep handy, you can just pin them to the Jump List.

Improved taskbar and full-screen previews - The taskbar at the bottom of your screen is what you use to switch between the applications you've got open. In Windows 7 you can set the order in which the icons appear and they'll stay put. They're easier to see, too. Click once on the new large icons or bigger preview thumbnails and you're ready to go. You can even see a full screen preview before switching to the window.

Internet Explorer 8 - With innovations to the address bar, search, tabs, and the Favourites bar, Internet Explorer 8 brings you more information, with less effort.

• Better device management - One of the great things about PCs is how they let us use such a wide array of devices. In the past, you had to use several different screens to manage different types of devices. But With Windows 7, you'll use a single Devices and Printers screen to connect, manage, and use whatever printers, phones, and other devices you have on-hand.

• Share music and videos - One of the great things about PCs is how they help you put your pictures, videos, and music in one place. Once everything is in that spot, it's natural to want to share it all with other PCs in your home. Windows 7 helps you do it. Windows 7 introduces new media sharing features that make your PC a great hub for experiencing audio, video, and pictures throughout your home. So, when you set up a homegroup or stream media from Windows Media Player, you can enjoy your music, pictures, and videos on other computers running Windows 7 and other devices in your home.