I tried these 190.62 drivers (Vista Ultimate x64) with my gtx 260 and got a whole whack of OpenGL errors...  Specifically hardware shading wasn't working in Poser 8 nor would Doom 3 or any games that used OpenGL load.  Rolled back to the 190.38 and all fine...  strange!!!  Glad they work for you!!!

The GR00VY GH0ULIE!

You are pure, you are snow
We are the useless sluts that they mould
Rock n roll is our epiphany
Culture, alienation, boredom and despair