How to...????

Hi!
I want to update my DirectX file. Do I have to delete old one or new one will overwrite old one???
Thank You!

All you should have to do is download Directx from microsoft and run the exe file and it should update the files for you.

heres the link

<a href="http://www.microsoft.com/windows/directx/default.asp" target="_blank">directx</a>