this is what I normally do when starting to oc my rig:
the first thing to do is to overwrite your timings for your memmory in your bios to your ram's spec, normally this is set to auto in your bios - and get the recommended voltage settings for your ram.
from thier I increase my fsb in intervals of 5 starting from 266 and tweaking other cpu options.
Have oc my q6600 2.4Ghz to 3.4Ghz, running stable and load temp stay below 60 with termalright cpu fan