Vista Transformation Pack will give to your Windows XP system the new and cool look of Microsoft’s future operating system: Windows Vista. The pack changes most of the system icons, skins and toolbars and also adds new enhancements to your desktop such as a dock bar or a different system tray clock

You sure will be surprised if you hear this. From now on you can update Vista Transformation Pack without uninstalling and you can even integrate Vista Transformation Pack into Windows setup files. (Still experimental, though but most of them are fine enough to be implemented)

more info read this page 

Welcome back!