Bios Mods -The Best BIOS Update and Modification Source

Hi BIOS gurus!

I would like to get some help on my motherboard
The motherboard is based on nForce 630a / 7025 (MCP68S) so in theory it should/could(?) support AHCI mode, but it is not available in the BIOS settings, SATA controller mode is only switchable beetween IDE / RAID modes. Browsing the strings of the BIOS with AMIBCP3.46 revealed that there is also a "Native" mode but i don't know how to make it available in the BIOS. Could someone please point me to a walkthrough how i could try to make this myself, or would maybe someone take some time and modify the BIOS for me ?

Thank you very much in advance!

The BIOS file in question is available from here:
http://europe.asrock.com/downloadsite/bi...40)DOS.zip

Other versions are avaialable here if v1.40 is hard to modify:
http://www.asrock.com/MB/overview.asp?ca...8C-GS%20FX

Regarding Antinomy's post here: http://www.bios-mods.com/forum/Thread-Re...e-you-post
The nForce 630a is not listed in either the AHCI supported or the unsupported list...

I also haven't found and technical specification or data sheet on the nForce 630a (MCP68S) to wheter it could or could not support AHCI.
Could someone please shed light on this?

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Also other solution may be, that it has NVIDIA MediaShield RAID BIOS option rom. Does somebody maybe know of such a MediaShield option ROM that supports AHCI mode, and can be used as JBOD (so i could simply use the SSD as a single hard disk as in IDE mode) and boot off the RAID ?