can't load high definition audio driver
i downgraded an acer aspire 5310 fron vista to xp pro.i downloaded all the xp drivers from the acer site. changed the bios and installed os and drivers.as i expected i was left with one pci device needing a driver and no sound.the tutorial i was following told me to expect this and the pci device was the high definition audio and to just install it automatically.however it won't install. the file i downloaded was compressed ,so i opened it and it still won't install automatically.downloaded the driver again, still no good.opened the uncompressed driver and clicked on set up.it installed but the pci device still has no driver,and still no sound. so i uninstalled it in add & remove and deleted the one reg entry left after the uninstall.can anyone help please?