I'm running winxp pro. Its been so long I can't remember where this started but, I can't get directx 9c to load. I install it and it says its there but, when I try to load nero 7 it says I need ...

I know there is no way to uninstall DirectX but is there a way to force it to reinstall over itself. Currupt a registry key or something. dxdiag says I am missing system.dll and I am having problems ...