when do you start playing with other CPU voltages like CPU VTT ?

[jamieufc]

Hi doing a overclock at the weekend on my Q6600 on a Abit IP35 Motherboard. I plan to upp the FSB and work my through all the diffrent voltages unitll my PC is stable.

Now what confuses me is when I should start playing around with other voltages like VTT , should I increae these straight a way ??

any tips on when to upp VTT etc would be apprecaited!

thanks