how to get the windows 7 taskbar on vista or XP im using vista

windows 7 theme for vista

http://giannisgx89.deviantart.com/art/Windows-7-Style-For-Vista-102269037

superbar

ViGlance – Windows 7 Taskbar

windows 7 theme for XP

http://vishal-gupta.deviantart.com/art/SevenVG-Refresh-with-Superbar-106952053

how to repair windows 7