gerardoj, you need to include support for your sound card when you compile your kernel.
did you compile the kernel yourself?
if not maybe you can load the driver as a module?, if you have module support for it in your kernel.
as root type:
Code:
modprobe drivername
alternatively you can edit the file manually and add support for you card; /etc/rc.d/rc.modules
uncomment the line which refers to your soundcard