Yup, lapping is where you get Grit 200-2000 Sandpaper (Not all the way to 2000 but like 200, 400, 600, 800, 1000, 1500) and you smooth the bottom of your HS/F (Heatsink Fan) to dissipate heat better. Yeah, with an E6600 you'll see nice results and you should get 3.0GHz Steady for 24 Hours easy. Later on, I'd invest in a ThermalTake Big Typhoon, add VGA Ram Heatsinks on the base to help dissipate heat, lap that, and install it using Arctic Silver 5. You should see an overclock reaching past 3.4GHz with that.
And yup, I'm Chozart in Training.
Oh, and don't get the Deluxe/WiFi Edition, some people have problems overclocking with a Frontside Bus past 400MHz.
I'd get the Big Typhoon over that cooler, but that's just me. I'm sorry Chozart.
The Big Typhoon has a 16dBA - 54.4CFM Fan while the Scythe has a 23.5dBA - 46.5CFM Fan.