My cpufreq was not activate by default, and researching I found this doc

I could load the frequency driver, but I couldn't the CPU policy governor because don't exist.
I am running ubuntu 9.10 i386 on HP/Compaq nx9600

$ dmesg | grep ubuntu
[ 0.000000] Linux version 2.6.31-14-generic (buildd@rothera) (gcc version 4.4.1 (Ubuntu 4.4.1-4ubuntu8) ) #48-Ubuntu SMP Fri Oct 16 14:04:26 UTC 2009 (Ubuntu 2.6.31-14.48-generic)
$ lsmod | grep p4
p4_clockmod 4164 0
$ cpufreq-info
cpufrequtils 005: cpufreq-info (C) Dominik Brodowski 2004-2006
Report errors and bugs to, please.
analyzing CPU 0:
driver: p4-clockmod
CPUs which need to switch frequency at the same time: 0
hardware limits: 375 MHz - 3.00 GHz
available frequency steps: 375 MHz, 750 MHz, 1.13 GHz, 1.50 GHz, 1.88 GHz, 2.25 GHz, 2.63 GHz, 3.00 GHz
available cpufreq governors: conservative, ondemand, userspace, powersave, performance
current policy: frequency should be within 375 MHz and 3.00 GHz.
The governor "performance" may decide which speed to use
within this range.
current CPU frequency is 3.00 GHz.
cpufreq stats: 375 MHz:0.00%, 750 MHz:0.00%, 1.13 GHz:0.00%, 1.50 GHz:0.00%, 1.88 GHz:0.00%, 2.25 GHz:0.00%, 2.63 GHz:0.00%, 3.00 GHz:0.00%
$ sudo modprobe cpufreq_conservative
[sudo] password for user:
FATAL: Module cpufreq_conservative not found.
$ ls /lib/modules/
ls: cannot access /lib/modules/ No such file or directory

The cpu policy governor modules are not present in my system, and don't know how add them. Thanks in advance.