AACRAID not available as an option in linux-2.4.20 kernel from kernel.org

Hello,

I have a redhat server  running 2.4.18-3 (gcc 2.96-110) .   I am trying to 
 upgrade the server to 2.4.20.  I downloaded the 2.4.20  source tree from 
kernel.org.

Once I extract and  do a  make menuconfig  on this tree, I do not see a 
choice for AACRAID under scsi controllers.   I see the entry on 2.4.18-3 
source tree.


Is there a patch I need to apply?

Thanks in Advance.


Karthik Nandyal