How to add audio drivers?

Recently, I changed the OS on my pc from vista to xp, because it would run faster.However, I lost my drivers and now need to install the audio drivers, so that I can get sound on the computer, however seeing as it is quite new, drivers are only made for vista, meaning that they come up as the incorrect drivers

Any help would be appreciated, Many thanks

Gateway: Model GT5092bHow to add audio drivers?
http://download.drivers.comHow to add audio drivers?
http://support.gateway.com/support/drive



The audio drivers there are XP and Vista compatible according to the site.