everest may pick up what that card is.
download and install this little program.
http://www.majorgeeks.com/download4181.html
with the program running call up windows audio/pci/
see what the program tells you and post that info back here.
or you could take the card out the system and see if anything is else on the card / chips makes/numbers and post that back here.
also please let me know what version of windows you are running so if i find a driver from the info i can point you to the correct download.