Now that we officially know the windows 8 layout, that is, the new Metro interface that we appreciate in the previous capture. Surely there will be many users with previous versions, who would like transform to windows 8, especially XP users, that is why I will recommend the installation of Windows 8 transformation pack.
Windows 8 transformation pack will allow us get the appearance of Windows 8 in XP, View and 7. It will 100% change the system files to achieve the Metro effect, including loading screens, wallpapers, and others. The remarkable thing is that its installation is very simple, within the reach of a couple of clicks, which will certainly not affect its performance, it is totally safe. However, the recommendation of create a restore point previously.
Windows 8 transformation pack It is free, 56 MB (Zip) is the size of its installer file and personally I consider it the most reliable, a well achieved and safe effect. In its Official site they can see more screenshots of the appearance in Windows 7 and XP.
Link: Windows 8 transformation pack
Download Windows 8 Transformation Pack