Multimedia Audio Control Driver

I recently had to format my hard drive. Stupid me had no back up copy of
drivers. I'm running windows XP and would like some info on where to get
drivers for Audio. I've no sound at all at the moment. I've search sites for
drivers but not sure which one I should be using! If there is some way to
find out which one I need before I start downloading I'd very much
appriciate advice on how to do it.

Much Obliged
Mike