Reaching 3.0GHz should be relatively easy and to do so the FSB must be set to 1332MHz, with the memory frequency locked in at 800MHz. This overclock can be achieved without having to upgrade the standard Intel cooler ( and does not require any voltage adjustments ).
Now if you are a little more adventurous, as we were, it is possible to reach 3.40GHz by selecting a 1512MHz FSB. Without any voltage adjustments we were able to boot up into Windows XP, though once in the operating system the computer was unstable. Therefore the CPU voltage was raised from 1.3525v to 1.4000v, which stabilized the processor. The problem you face at such a high frequency when adding more voltage is heat! This meant ditching the standard Intel box cooler for something a little more extreme.