hmm, i'm not an expert, but i don't see any sound cards listed there...are you sure you have one in your machine? i suppose next i would open up the box and look at the card itself. there is almost always some sort of model # or something.
just to confirm though, when you ran alsaconf was searching for legacy cards the only option it gave you?
oh, and just to be safe, if you are sure that you have card installed in a PCI slot on your mobo, enter your BIOS at boot (press DEL or F10, or whatever it tells you to) and make sure your card isn't disabled. you want to look for an advanced tab or something, that will list your PCI devices.