Maybe, through compatibility libraries, I found this back in May.
http://www.msfn.org/board/Dx10-XP-t96961.htmlThese libraries allow the use of DirectX 10 games on platforms other than Windows 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.
http://alkyproject.blogspot.com/