Yet another victim to the cruel world of marketing. The FSB is not 1066Mhz, the FSB is 266.5 (to be precised) The 1066 comes from the CPU's being whats referred to as, "Quad-Pumped" hence the real FSB seems a lot higher. [266.5 x 4 = 1066Mhz] In reality you would never deal with that number at all, you would only ever manipulate the 266, thats the one you jack up bit by bit to overclock.
SCENARIO:
Initial FSB = 266
Initial Multi = 9x (locked)
Default clock = 2400Mhz
Jack the FSB up in increments of 5Mhz
New FSB = 270 (lets keep it as round numbers)
Multiplier = 9x (locked)
New clock = 2430Mhz
Skip a few steps and come to this
New FSB = 315Mhz
Multiplier = 9x (locked)
New Clock = 2835Mhz
Get the jist of it yet?
As you puch the FSB higher and higher the CPU will want to eat up more and more voltage, this is of course limited by the motherboard and is where you will then increase the CPU's core voltage (known as Vcore), looking at your post i gather you already know how to handle that bit.
Pushing it even further after that will require you to fiddle with RAM timings and dividers etc... this is where my knowlege becomes sketchy so to save from giving out wrong information ill stop there and let someone else takeover
Hope this helps, and dont forget to read the 101, its very helpful
dragon2309