Multiplier is locked upwards as far as I know, and you aren't going to find fsb adjustments in the bios of the overwhelming majority of notebooks (or prebuilt desktops). The linked method seems to be a way to run a 400MHz FSB chip at a 533MHz FSB, as both are used as stock speeds. Your laptop's bios will most likely only support these two fsbs and will have no voltage adjustment. I'd imagine a lot of low speed 400Mhz Pentium Ms have the headroom to do it, but a 2.0Ghz chip isn't going to take a 33% overclock in stride as long as it's inside the laptop. CPUs running in extremely cramped quarters, with very specific power circuitry are not what you should be overclocking anyway.