Well, in the meantime, you can do this too ! ( TRAIL N ERROR ) also run hwmonitor and cpuz before doing this so as to know the temperature as well as the realtime clocks of cpu.
1. Select the first PLL in the drop down list.
2. Press "getfsb", if you get no error and your CPU frequency is detected correctly then do step 3. Otherwise try step 5.
3. Hit "setfsb" and see what happens, if the system doesn't lock up then go to step 4, otherwise step 5.
4. Move the top slider a tiny bit, then hit setfsb again. Use CPUz to check if the overclock/underclock worked. If not then see step 5.
5. Pick the next available PLL in setfsb and start from step 1.