I did DXDiag and it said under my display PANEL that there was an error in the registry and I should reinstall the latest version.

I downloaded 9.0c again and installed it. However when i clicked to install it just jumped straight to the "components are installed and ready for use" SCREEN. I did DXDiag again and it still says there is an error. I also tried downloading the febrary 2006 Directx thing and that hasn't fixed it either.

What do I do?
Some people say it can't be uninstalled & some say it can.
I don't know for sure and I have had no reson to try.
http://www.majorgeeks.com/download.php?det=2935
One sure fire way is to reformat. ALRIGHT Fed! Reformat that puppy!  

I have never seen it successfully uninstalled.is your video card a built in, AGP card or a PCI card, if it is an AGP or PCI card try uninstalling the drivers and then reinstalling it, make sure that you still have the cd driver for the video cards, then reinstall again direct x9.0c,, try it...  http://www.brothersoft.com/utilities/uninstallers/directx_happy_uninstall_40880.html

Would this be successfulHaving read the bumph on it at the [highlight]vendors site[/highlight] (Please always try to link to the authors site rather than 3rd parties as unwanted add-ons can get attached the further along the chain it travels), all I can say is that I'm not overly impressed. The installer is CLEAN as far as malware etc goes but the online help FILE is missing or mislinked. The program has inbuilt limitations as it's a trial version which is fair enough - But, those limitations aren't referenced!
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DirectX Happy Uninstall is currently distributed as SHAREWARE. This unregistered version of DirectX Happy Uninstall is almost fully functional, However, it has some limitations.