marvell yukon 5055 chip cant recognize, 10.5.2 rev2, with yukon2 driver installed

[michaelso]

my laptop is a fujitsu a3120
amd turionx2+x200+sb450

now i can install the os and the sb450 can work smoothly
with dual boot using darwin as the boot loader

but i face a critical problem

as it use marvell yukon 5055 chip
i install the yukon2 driver provided in the disc
but it seems the os still cant recognize the chip!!!!

can anyone please help me??