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 2.6.26.6-49.fc8. I even can't load the acpi_cpufreq module, this is the error message: FATAL: Error inserting acpi_cpufreq (/lib/modules/2.6.26.6-49.fc8/kernel/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.ko): 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. Thanks Ale 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: state count: 8 active state: T0 state available: T0 to T7 states: *T0: 100% T1: 87% T2: 75% T3: 62% T4: 50% T5: 37% T6: 25% T7: 12% 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