Crear efecto de lluvia en un wallpaper

[postlink]http://tupctube.blogspot.com/2009/11/crear-efecto-de-lluvia-en-un-wallpaper.html[/postlink]http://www.youtube.com/watch?v=ZBL-CA0uKwEendofvid
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http://www.megaupload.com/?d=WRD92RFI
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