Need help with the "alsa=" cheat code

[lothario]

I would like to use the cheat code
alsa=ad1848
at boot time to start this sound driver.

But I would like to know:

1. How can I confirm that this is the correct driver name?

2. Where is the configuration information for this driver?
In what directory? I want to make sure that it is correct.
I would like to edit the file(s) if necessary.

Thanks.