My notebook is like yours P-M 1.8, 128M 6600go, 1025 RAM.. but mine is a no name brand Quanta KN1, or ENP611, vanilla book... AH plays very well, but I think I'll try that.
Did you have to disabled the P-M power saving? AH was unplayable until I did that. I always get asked if AH is really any good on a notebook, I have no complaints., I really enjoy gaming out on the go, esp for about $1k.