May be if you post your hardware specs, people can help you. You can also search on google for specific modules based on your hardware specs. ATI drivers (commercial) are provided by ATI and not included in the Linux kernel (same for nVIDIA). Instead you can use the free drivers that come with the kernel. Building Alsa is just a matter of checking <M> for alsa modules based on your hardware specs.
Have you checked out
or if you want to be extra verbose
If you have a working (default) kernel, you can check out the boot up messages to see what gets recognized