There was a bunch of different versions of 6.03. Try this one at nvidia http://www.nvidia.com/object/nvidia_sys ... _6.03.html
I would stay away from any of the newer versions as I've only ever had problems with them. If you have the older MIO firmware installed, you can get the updated version at the resource collective and use the update portion of the nvidia system tools. After that, you should be able to load the profile at startup. Works on mine, and it is pretty much stock except for gpu and memory. Don't use performance for gpu though. Just cpu or cage fans. Stay away from the other parts of the performance page.