Why not 2 monitors out of the 'box'? 
http://www.engadget.com/2009/12/10/onkyos-dx-dual-screen-laptop-is-a-far-better-deal-than-kohjinsh/
http://digitalwpc.com/Videos/VisionKeynoteVideos/2/Showstart#fbid=MVkbW_t2G1Z @ 02:24:47
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