One of the changes we saw on every leaked Windows 8 image is the Windows Live Integration, which showed up in the far right corner, in the taskbar, as the profile picture of the user. One DeviantArt user has produced a simple free utility that mimics this cosmetic change in Windows 7.
Taskbar UserTile is a portable tool. Simply download it and double click on the executable to add your user profile picture in the notification area between the clock and the ‘show desktop’ button.
Clicking on the image open a small popup from which you can switch user, log off, Lock PC and also change the profile image.
Use it with the Metro styled Aero Lite Windows 7 theme for the real Windows 8 look.