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Can't load cpuspeed

Hi all,
I can't run cpuspeed on my wife's notebook:it's a Acer Aspire 3630 and it use a Intel Celeron CPU.
FC8 and  kernel

I even can't load the acpi_cpufreq module, this is the error message:

FATAL: Error inserting acpi_cpufreq (/lib/modules/ No such device

And BTW, what is the correct value I have to in the file /etc/sysconfig/cpuspeed in the line DRIVER ?

I put down here some info, please let me know if you need others.

>cat /proc/cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 13
model name      : Intel(R) Celeron(R) M processor         1.60GHz
stepping        : 8
cpu MHz         : 1600.097
cache size      : 1024 KB
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 2
wp              : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss tm pbe nx up bts
bogomips        : 3201.58
clflush size    : 64
power management:

>cat /proc/acpi/processor/CPU0/throttling
state count:             8
active state:            T0
state available: T0 to T7
   *T0:                  100%
    T1:                  87%
    T2:                  75%
    T3:                  62%
    T4:                  50%
    T5:                  37%
    T6:                  25%
    T7:                  12%

>dmesg |grep -i cpu
Initializing cgroup subsys cpuset
PAT disabled. Not yet verified on this CPU type.
ACPI: SSDT 3BDF64B2, 01FB (r1  PmRef    CpuPm     3000 INTL 20030224)
SMP: Allowing 1 CPUs, 0 hotplug CPUs
PERCPU: Allocating 41384 bytes of per cpu data
NR_CPUS: 32, nr_cpu_ids: 1
Initializing CPU#0
CPU 0 irqstacks, hard=c07cb000 soft=c07ab000
SLUB: Genslabs=12, HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
Initializing cgroup subsys cpuacct
CPU: L1 I cache: 32K, L1 D cache: 32K
CPU: L2 cache: 1024K
Intel machine check reporting enabled on CPU#0.
CPU0: Intel(R) Celeron(R) M processor         1.60GHz stepping 08
Brought up 1 CPUs
CPU0 attaching sched-domain:
ACPI: CPU0 (power states: C1[C1] C2[C2] C3[C3])
ACPI: Processor [CPU0] (supports 8 throttling states)
Switched to high resolution mode on CPU 0
cpuidle: using governor ladder
cpuidle: using governor menu

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