A member spotted a very interesting project over the weekend, and has started quite a buzz in the thread.  The Alky Project is using the DirectX SDK on Windows XP to write DirectX 10 compatibility libraries.  The basic idea is that the DX10 Geometry Shaders could be changed to native machine code on non-Vista machines, allowing your video card to render it, assumedly with a performance hit.  While it seems unlikely that they will get DX10 running on non-DX10 hardware, it will allow DX10 to run on XP if they succeed.
“These libraries allow the use of DirectX 10 games on platforms other than Microsoft Vista, and increase hardware compatibility even on Vista, by compiling Geometry Shaders down to native machine code for execution where hardware isn’t capable of running it. No longer will you have to upgrade your OS and video card(s) to play the latest games.”

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