Help ! How to down version to linux-2.6.12.6

[Shawn Q.Z. Tang]

Oh my god , sorry , i didn't know why it's garbled !

Ok , i need to driver my bcm4318 minipci wireless card in kernel 2.6.12.6 , what should i took from linux-2.6.17.rc2 ?
Can i just insmod the ieee80211 and bcm43xx in down version kernel ?
Thank you .