There's some details we need for example, is the controller set to AHCI in BIOS and was this drive an existing boot device on another system? AHCI only has support on Windows Vista and later so it's strange that the 32-bit version of XP accepted the driver but it's not so hard to see why the 64-bit version rejected it after all, Windows XP 64-bit had several limitations that made it less popular than the 32-bit version. As for Windows compatibility, I will need to confirm this with our product management.

Sorry for not being clear;  Fernando's 11.2.0.1006 is the exact driver that I've been slipstreaming and was able to install 32-bit XP with.  In fact, I use this version of the driver in Win7 as well because I find that it performs much better than the more modern drivers, but that's another topic entirely.
 
64-bit Doesn't seem to install under any circumstances, neither using the 64-bit driver modded by Fernando or even setting the BIOS to IDE seem to work.  Also, the normal AHCI-related BIOS error is 0x0000007b, but when trying to install 64-bit XP the blue screen reports that "The BIOS in this system is not fully ACPI compliant" which seems to be a completely different issue.
 
I made sure that only the one hard drive and my optical drive were plugged in when trying to install.  I'm almost positive the HDD was formatted, as well... I may try once again in a couple days just to be 100% sure that it doesn't work with a cleanly formatted drive just to rule that out, but I highly doubt it seeing as XP32 installed without any hiccups under the same conditions that XP64 failed.  The only other thing I have yet to try is installing with the drive (and/or even the optical drive) plugged into the Marvell ports on the board, but I don't have very high hopes for that, either.
 
Thanks for hearing me out, I hope we can get to the bottom of this or at least confirm that it's impossible so I can cry until a new operating system with low input-latency is produced (in other words for eternity)
 
 

Have you tried to attach the CD on one of marvell SATA ports and then set that to IDE mode in BIOS. The HDD should be on the Intel SATA port and BIOS set to AHCI. All BIOS setting should be set to legacy mode and not UEFI for boot and options ROMS.

Well, here I am on Win 7 again.  It turns out that you can't boot to devices plugged into the Marvell ports, and you can't even set them to IDE, either.
 
So, I'm out of ideas again.

Yes, Xp supports i7's you can try installing xp on a virtual machine?

Windows XP only supports old versions of DirectX so by using this operating system you are cheating yourself of a better gaming experience.
 
In addition it should be noted there is no official support from Microsoft. You could open Pandora's box for a security threat.

Sorry to see that didn't work.
The mayor problem is it has never been any great support at all from hardware vendors for XP64.
That's was the main reason that I give up with XP64 long time ago.  

I tried to research this but I really don't see a solution anywhere on the web. Are you absolutely sure you won't consider at least Windows 7?