Im running a 17" core2duo iMac with the ATI option.
Im about to install bootcamp to get the TOW demo running. Everything Ive seen in the TOW forums seems to indicate that it will run fine, though I will probably have to optimise video settings to get it running smoothly... CMAK should be a walk in park
I should be up and running in a couple of days, Ill post some feedback when everything is running smoothly *touch wood*
Other than that, the Imac C2D machines are great, I havent had any problems with mine... even out performs my bro's dual 2.8(?) ppc on games like COD, Quake4, Doom3 et