Short answer: it might not be worth it.
Complete answer: it's hard to tell what a laptop is compatible with since the manufacturer's generally don't publish compatibility lists. That's a somewhat old 32-bit CPU though, whether the BIOS on that board would get along with a faster CPU is hard to guarantee. Even if you could, those CPUs tend to be expensive, but still wouldn't equal a more modern CPU which your laptop definitely wouldn't support.
What are you trying to do with this older laptop and why would you like to upgrade the CPU? There may be a different solution.