Problems with Cs4235

[Aljosa]

hi everibody,
i have problems with on-board cs4235 chip sound on freebsd 5.1

i found kernel config lines for older freebsd's that does not work on 5.1:
controller pnp0
device pcm0 at isa? port? tty irq 5 drq 1 flags 0x15

when i put them in config file, /usr/sbin/config brings me error in lines 
where are lines above.

does anyone know how to configure kernel without recompiling or with compiling 
to solve this problem ?

regards,
aljosa