Google found me a detailed multi-step instruction about half-way http://www.driverheaven.net/windows-xp-2000-nt-9x-forum/129622-compaq-presario-c500.html
Hope this helps.
I downgraded this notebook to Xp but have a problem where to get the Xp drivers for this machine.
I visited hp website but most of the drivers are not there.
Please help where to get all the drivers.