One typo can mess up the works. I reloaded the older ND game Phantom of Venice on W7 with SP1 for my lady friend and proved it was working OK. Then I moved everything from the OLD game folder to a temporary folder, EXCEPT a dotnetfx folder that I thought might be required.
If you follow the instructions for older games, you should be able to install them just fine. We do not know how to address this issue and would really like some help.
I read with horror that someone had tried to delete every directx-related file from the registry in order to reload directx 9. Directx is part of the Windows installation and cannot be removed. Doing so will most likely corrupt the registry. Having said that, people are likely to try messing with the registry so be sure to make a backup copy of your registry if you do.