I have helped many people getting the correct driver by going to PCIdatabase.com with the Vendor and Device ID. It isn't perfect but it works. Sometimes doing a direct install of XP SP3 results in no sound and a Microoft UAA patch needs to be installed but I am glad you were able to resolve your problem with a new card.
O-boy, I wonder if you can help me with this? I would love to get my sound back on my Acer! I googled up your suggestion, I will take a look at it when I got my acer on hand: https://support.microsoft.com/en-us/kb/888111
If you would like to help me out I will start another thread, or mayb dig up my old one?
My drivers seem to be the right ones, but still don't work. The Acer I got used seems to have low hours on it, so I am still hopefull that an answer will appear for me.