That is a good score for a non overclocked system. If you do plan on on overclocking you should get an aftermarket cpu cooler if you don't have one already.I would recommend this one.
well up to 3.0ghz, overclocking is pretty easy because you don't need a Voltage increase.. so increase the FSB from 266 to 333 and you'd be at 2.997ghz or 3.0ghz, after that you'd need to increase voltages or whatnot