I don't have a sony laptop, however it is very unlikely: laptops are built to save space, and to be fool-proof: as such,
- jumpers take up space, so most of the electrical settings are soldered, not bridged
- BIOS settings are usually very tightly controlled (it is, for example, very rare to find RAM timing settings on a laptop)
Meaning that, while overclocking it isn't impossible, to do so you'll need to either:
- identify the contacts regulating FSB and/or multipliers on the motherboard,
- or to edit CMOS values (with an hex editor),
- or both.
Both are VERY risky operations. Have fun.