If you want to have used Mac os in your PC. So there is no need to worry we have a solution of this to convert your window os or vista os into Mac os. They donot change os they have change your theme of window xp. There is a software which has to convert window os into Mac os. There is no need of any thing only one software is used. There is a software which convert window os into Mac os like its demo of Mac os. List of software which convert this.