How to add AHCI mod to MSI P41T C31 ?

How to add AHCI mod in this bios? Could you give me a modified rom please?
The problem is that when you are in BIOS there is only "IDE" option available for "RAID Mode"."AHCI Devices Group" options are not visible as well.

Here, the latest bios:
http://download.msi.com/bos_exe/7610v19.zip

http://de.msi.com/support/mb/P41TC31.html#down-bios

Thank You and sorry for my bad English

  7610v19.zip (Size: 695.6 KB / Downloads: 0)