I had JK2 installed and it worked great with dx8. I had to format but I installed everything again. I installed JK2 again and didn't pay attention to it. I hadn't played it since I reinstalled. Well I just bought Morrowind and it required dx8.1. Well I installed dx8.1 and morrowind ran great. But when I tried JK2 it says hardware not found. This is weird since it ran fine before.

I'm running Win2k SP2 with all updates
Leadtek Geforce 3 TD with 29.20 drivers (tried 21.83 aswell)

I don't know if it will help, but this thread is the same where I posted what I did.

Here is the link to the tread I worked with (http://www.lucasforums.com/showthread.php?threadid=40696)

Basicly, I can't tell you why this happens but This is what I did to play the game. Open the .exe through the game folder. I wrote this in a ton more detail though the thread I wrote in before. Hope it helps, bye.