When my first X1900XT overheated due to extended periods of video gameplay, apple sent me what they called "Revision 2" of the card, and claimed that it won't overheat the same way the first one did. Nevertheless, to be on the safe side, i've always cranked up my computers fans from 500rpm to 1500rpm to play graphically demanding games such as Doom 3 or Quake 4. I'm going to be buying Call of Duty 4 shortly, and running it in Vista, and i'd like to crank up the computers fans when I play it. I use smc fan control to crank them up in Mac OS X. What's the simplest way to crank them up in Windows? Thanks.