Hi.
You need know that chipset has your mobo, use CPU-Z to get that info. After that, run the program and look for the same chipset.
Start to rise the FSB in little steps and test for stability, keep your eyes in the temps using HWMonitor.
P.D. Tom's hardware, Tom's hardware owner or me AREN'T responsible if you damage your rig trying to overclock, this your entire responsibility.