there is a dxdiag.exe but the is for looking for problems. I'm still looking to find the version... I'll let you know.
edit:
<- look at the bottom of DXdiag and it will tell you the version!
as for the site, why not go to MS?
and why i dont want to get it from M$ is because i havent activated windows because i have to call them up, so the validition thing to get dx wont work.