I've recently decided to try overclocking my 320mb 8800gts but I'm having some trouble using rivatuner. When I alter the clock speeds under '3d performance' and apply them, it changes the low power 3d and 2d settings aswell.  
 
The 'low power 3d' sliders are always greyed out but the other two I can alter.
 
I'm also having a similar problem changing fan speeds. The only slider I can adjust is performance 3d and when I change that setting, it applies it to low power 3d and 2d aswell.
 
Is there a setting I can change to stop this happening, or is it just due to my system.
 
Thanks for any help,
J.
 
   
 
P.S. I'm using vista HP 32-bit, rivatuner 2.09 and forceware 174.74.

I think it just works that way. Shouldn't be a problem though.