Right click on My Computer -> Manage -> Devcice Manager -> Right click on uninstalled sound card -> Properties -> Details _> Hardware ID
there's two numbers you need - the one after VEN which is the vendor code of the device. DEV is the device code. Check on the following websiet for both codes and it'll tell you which device you have installed. Then google the support website, download & install driver.
www.pcidatabase.com