Feedbacking:

1) on STALKER, looks great. Better colors, smoother, generally speaking.
2) on the other hand, RIVA TUNER does not recognize driver settings, and says "Detonator II detected" (?)

3) more: STEAM says for the 1rst time, believe it or not, that my "video driver is outdated", and "could cause problems" (!!!!)

launch steam using DxTweaker and use ident change to make it think your using xx.xx drivers :P

Thx squall, but I simply ignored the alert, then STEAM launched normally. Better (and weird, at least for an ignorant like me) - with this driver my advanced settings at CSS went to a higher level, now it's "recommended for my system" 4xMSAA & anisotropic 8x, and all the rest full