Hotkey drivers won't install on Toshiba Satellite L305-S5919

Just installed XP on my brother's Toshiba Satellite L305-S5919 and got all the drivers installed except the hotkey driver. Every time the setup starts I get an error saying "TOSHIBA Common Module not found! This setup will terminate."

I've looked for another driver for them but can't seem to find any driver other than the one on the Toshiba website. If anyone could find a solution to this I'd appreciate it. I made sure I typed in the right model number every time.
 
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