Problems with Disk Controller Adaptec SAS

[Leonardo Paulo]

Hi,

I'm with a big problem.
I'm trying to install the FreeBSD 6.2, but the OS no
recognize my SAS disks.
I'm using one Adaptec RAID 3805 SAS in RAID0.

   My computer informations are:
   CPU: Intel Xeon Quad-Core 1.6GHZ
   Motherboard: Supermicro X7DB3
   Memory: 4GB Kingston DDR2 667MHZ
   HD: 3x 300GB Seagate SAS
   Disk Controller: Adaptec RAID 3805
   OS: FreeBSD 6.2

 When I try to install the FREEBSD, the OS no recognize the
 disks, and the controller.

In Adaptec website have one drive for FreeBSD, but I don't know how
I use this drive in instalattion of FreeBSD.

Somebody pass for this problem?