SpeedFan 4.24 - anyone use this?

SpeedFan - Access temperature sensor in your computer: "If you are looking for a tool that can change your computer's fan speeds, that can read your hard disk temperature and S.M.A.R.T. status, that can read temperatures, voltages and fan speeds and much more, then you came to the right place. SpeedFan works fine with Windows 9x, ME, NT, 2000, 2003 and Windows XP. And this is absolutely for free :-) "