I believe you'll need to enable ACPI to control both the CPU and the fan on your Laptop.
Once you have things properly installed you'll find that Linux will give you far MORE battery life than Windows does.
There are various reasons for this, but not the least of which is that Linux will HALT the CPU during wait loops unlike windows.
This consumes far less power and keeps your laptop cool.
On my Pavilion the fan practically never comes on in Linux unless I'm doing something which throws CPU utilization quite high.
You should try starting with the Linux Laptop web pages to find things specifically related to your laptop.
is one site.
Remember though, if you see that you may need to install something as one of these sites say, DO NOT do so directly.
First try using the Mandrake repositories:
For instructions about configuring and using the RPM repositories.
For instance ACME is quite usefull on laptops... to install it after you have done the above...
A minute or so later you'll have it installed.