although the q66 is a reasonable overclocker for its make they are very finikey about the amount of ram you have... if all 4 ram modules are used they often panic and wont allow any overclocking,
so supplying your specs like motherboard and ram would help also.
also what speeds you hoping to achive... coz 3.0 will be easy enough. 3.6 will take finess 4ghz will take a miracle. (but hey its XMAS