[CentOS] pwm fancontrol kernel module??

Hi,

I have just setup CentOS4 on a system and want to get "fancontrol" 
working.. I am able to get lm_sensors configured but when I run 
pwmconfig I am told there are no modules loaded..

What module needs to be loaded for pwmconfig and fancontrol to work?
(Board does support PWM in the fans because fancontrol worked on this pc 
with Ubuntu)

TIA