DX9.0c + Windows XP SP2 2142
 

DX 9.0c can be download here: http://iamnotageek.com/articles.php?...=1&topic=DX_9c

SP2 build 2142 can be downloaded here: http://iamnotageek.com/articles.php?...c=SP2_Download

This is still the beta right? I couldn't find anything on the windows site ...

That's right. RC2 should come out any day now, the final will be available later this summer, possibly even september.