If theres anyone who has NOT installed PowerNow 2.1 on their system, I would do it. It seems to dramatically reduce the heat on the case of the laptop. Now while using windows lightly for even hours on end, the fan never once turns on (except when I start a dvd, then it only comes on every once in a while).
The PowerNow included with the HP laptop is only version 1.5 I believe. You need to get version 2.1 from a different manufacture's support site. I found it on some foreign web site that was getting about 2kbps. If someone wants to host it on a better connection than my web page, PLEASE do because I'm going to pull this in a week or so: