Direct x 9.0c issue

hey. i just bought need for speed most wanted and i tried to install it. but it tries to install the direct x, which i have on here allready, so i say yes, since if i say no it will cancel the hole setup. then it goes, windows does not trust this software, blah blah blah. and closes.

any ideas?

Which version of DirectX did you have before trying to install Need For Speed: Most Wanted?