If you run Windows Vista and like the way OS X is designed you could install Vista OS X which transforms the Windows Vista theme to that of Mac OS X.

The Mac OS X theme can be installed on all 32-bit editions of Windows Vista and is fully Service Pack 1 compatible and can change: Boot logo, Login screen, Welcome Center, PC-Properties, Back and forward buttons, Icons, Wallpaper, Screensaver, Sounds, Cursors and many more.

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