FlyakiteOSX ( for XP only )

What is it? FlyakiteOSX is a transformation pack. It will transform the look of an ordinary Windows XP+ system to resemble the look of Mac OS X. The installer simply automates the process of replacing critical system files, setting registry tweaks, and installing extras such as cursors, sounds, visual styles, etc.
In case you are not happy with the results of FlyakiteOSX, everything is completely removable. Just run the uninstaller from the Start Menu or from Add/Remove Programs.
Here the screenshots and here is the download menu.