Doolittle81,
It's a DirectX 9C Update, Kinda like dx9 to dx9c
Not a new version it's just a latest "patch/update"
Use windose update or google and get it
Running it fine here on xp
Will do vista when i re-install on partition
Ciao
Def
Ohh it's dated Nov 2007, Don't panic they shoved it out early eg 25th of this mth (Oct)
Here try this link it's the "redistribution" instructions below on this page
http://www.softwarepatch.com/windows/directx.html
If no links allows Mods just delete or pm and i'll remove link