I haven't seen it anywhere else, but I had serious issues with the AIW features of my AIW Radeon 8500DV in my MSI nForce board (and no response in any form from ATI support!). Works flawlessly in my other systems. The display part worked fine, though so I don't think the 9700 would have issues in an nForce or nForce2 board.
Actually, there has been a big issue with nVidia video cards in some nForce boards while using the onboard audio! It's been concluded that it's probably a driver issue, and nForce2s don't seem to have the problem.
For nForce and nForce2 info, you may want to check nForcersHQ. I've found some good stuff there.