It's a little more complicated than just increasing the FSB because that also affects your RAM speed, so you have to change the RAM settings to maintain stability. Then you may need to increase the voltage for the cpu. I found it useful to write down the changes I made, so if they didn't work, I wouldn't try them again. Your goal is to increase the CPU speed that will be stable under Prime 95. To get there, you'll find some OC settings that will not POST, and others that will POST, but not boot without a BSOD. Success is POST, boot, and stable.
You will need to watch your CPU temps, if those you posted are at idle.
deadlee690 raises good points:
-- the PSU must be stable,
-- you will have to disable speedstep and EIST
-- your vCore is low for OC, and if I remember correctly the Q6600 MAX vCore is 1.35V
Some successful OCs involved lowering the multiplier, and raising the FSB to as much as 500MHz. Doing that requires increasing the northbridge voltage to get the increased FSB, and relaxing the RAM to keep it at or very near its stated speed (in MHZ).