Forced Mass Storage Device SATA driver install for AMD Chipsets

WinPE2.1 works fine on an HP 6735b laptop so I have no problem with drivers there. However, XP blue screens (even straight off an SP volume license disk). We have HIIS but have been unable to get it to successfullly inject the SATA driver. The same goes for Deployanywhere.

I noticed that some talented people made driver injection scripts for the ICH8 and ICH9 chipsets. I need to create one for the AMD M780G Chipset.

When the driver is successfully installed, it seems to only require one driver file ahcix86.sys, but 2 inf files to install it (the second one does not require a sys file). I have confirmed this by seeing what HIIS sucked off the machine.

How do I go about finding out which registry entries and which registry entries pretain to this driver? In the ICH9 script, there seems to be a couple of dependencies beyond just the straight driver for SATA.

I have attached the txtsetup.oem driver from HP as well as a registry dump of criticalsystemdevices and services from the machine that has a working install of xp. Can someone show me how to do this and or create a driver script for this?