Thanks for your reply... Well.. I've send this questions to ASUS (I've been running build 2428 then, so it was some months ago!). And they've answered me, that all I've wrote was correct, but I XP isn't out yet, and they do not support it.
But it makes me go crazy, that NVIDIA reference drivers are running smoothly... And... drivers from other manufacturers (also- modified, like ASUS does) are running like a harm!
****... I'm really pissed. I thought ASUS provides us with newest, best drivers with many extended functions... Eh...
Go to Hell ASUS...
I think I MUST wait another 2-3 months for good drivers...