I am using the 8KNXP motherboard with an Audigy 2 Platinum eX and haven't had any problems yet (over two weeks). However, if you want it to work, you MUST follow the insructions exactly or the drivers will go crazy (as I learned the hard way). I am not using a Radeon 9700 at the moment, but I plan on getting one soon. As of now I have a Gainward GeForce 4. I hope this helps!
- Daniel (firstname.lastname@example.org)