Upgrade Graphics Hardware?

So I tried to turn on my old laptop and it's still working. It's a very good laptop ( Sony Vaio) so Graphics wondered if you can update your graphics. ( I know it's possible ) but can you please give me a link. All the other websites say you can't update it.

Details:
Laptop: Sony Vaio
Graphics Hardware: ATI Mobility Radeon X 2300
Processor: Intel(R) Core(TM) 2 Duo CPU
Operating System: Windows 7-32 bit( I updated it from XP to 7)

I think if you can update your operating system you can update your graphics hardware.

If you can give me a link for the newest one. Or the latest one that is compatible with my laptop, I will choose you as best answer.

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