Nvidea Control Panel settings?

[SEE]

I have a GTS250 and have the config.ini maxed out to 'perfect' with Anisoptric filtering, no texture compression, etc (pretty much as recommended for Nvidea cards from examples I have seen on this forum).

Some of the Nvidea Control Panel settings are fairly straightforward but not sure about the ones I have marked in red:-

Anisoptric Filtering -----(x2)
Antiliasing - Gamma Correction off
Antiliasing - Mode Enhance the application setting
Antiliasing Setting ----(x2)
CUDA - GPUs ----( All)
Extension Limit Off
Maximum Pre-rendered frames 3
Multi-display/mixed -GPU acceleration (Single Display Mode)
Texture Filtering - Anisoptric Sample Optimistion Off
Texture Filtering - Negative LOD Bias ---- (Clamp)
Texture filtering -Quality -----(Quality)
Texture Filtering -TriLinear optimisation Off
Threaded Optimisation -----(Auto_
Triple Buffering On
Vertical Sync -----(Forced On)

Any info or suggestions would be much appreciated.