Well, start with HardDrake,configure module and/or run config tool.
take note of this...if HardDrake doesn't see it,
'ISA PnP devices are not probed for by HardDrake. In order to configure them, run sndconfig on the command line. You will need to install the sndconfig package if needed.'
I don't know whether on board is considered PnP, but would be next step if HardDrake fails.