Well this is strange. I have played NV for a couple of days without other issues than that stuttering stuff which I fixed by using the d3d9.dll fix.
Now, I have just installed 4g of new RAM and suddenly I get sound dropout and loud static noise. I have tried some other games and played some mp3 and videos and all that works fine.
So why am I having problems with NV?
I'm running Win Xp Pro 32 bit and I know that I can't use all of my ram with this system, but can the extra ram really trip up the system? It's only one game that seems to be affected.
Help 
"Sometimes when you do things right, people are not sure you've done anything at all." -- God (Futurama)