Found this not sure how long its been out but I have it working on XP 32bit Extremely well on Crysis and FC2.
Cheers
http://www.technospot.net/blogs/download-directx-10-for-windows-xp-from-alky-project/
Cheers
http://www.technospot.net/blogs/download-directx-10-for-windows-xp-from-alky-project/