Use this site to find which version you have: https://windows.microsof*****m/en-gb/w...=windows-vista
And download this: https://www.microsof*****m/en-gb/downl...ils.aspx?id=35
And the latest version here: https://www.microsof*****m/en-gb/downl....aspx?id=17431
https://msdn.microsof*****m/directx