Not unless you have a laptop with overclock options available e.g. some of the MSI ones. This is marketed as a special feature so if you don't know about it, you won't have it.
Or you have a 400mhz FSB Pentium M, which can be pinmodded to 533mhz and a nice overclock.
But otherwise no.
Graphics cards can be overclocked but I really wouldn't recommend it as they will die eventually and they are expensive and inconvenient to replace.