Update....I don't know if anyone actually reads these threads anymore. But this would apply to pretty much any laptops similar to the 57XX.

Vista is still running fine, no real problems. I've updated the NVidia drivers again. I use Rightmark CPU to maintain an underclocked configuration on the CPU. Version 2.30 is out as of this month and seems to be the first version that works consistently well with Vista.

I use ATiTool to underclock the NVidia card at startup to about half speed. ATiTool can be configured to automatically set GPU clock speed back to normal when entering a 3D environment.