On board sound problem

[dvelez502 at verizon.net]

Hi, I am using FreeBsd 5.1 
 
I read the handbook on adding a soundcard driver to the kernel. The 
handbook says to add options PNPBIOS for on board soundcards. When I  
was ready to build the kernel it stop instantly and complian it did 
not regonize the PNPBIOS option. Below is an output from a previous 
red hat installation about my soundcard. 
 
00:11.5 Multimedia audio controller: VIA Technologies, Inc. VT8233/A/8235 AC97 Audio Controller (rev 50) 
 
I appreciate your help. Thanks