Awesome. Great news. What did you do?
p.s. My ssdt_usb.dsl need a bit of work as dgsga ran into an issue - booting stops a few lines into the process. I hope to be able to locate and fix this problem a.s.a.p.
I did a lot of things and I am afraid I did not take adequate notes. Starting over with a fresh install this weekend so that I can pin down what was actually necessary and what was simply incidental. I unfortunately have a busy weekend, so maybe you can get your build booting as you can probably make more of it then I can.
I think your DSDT is the most important piece so far. With my own DSDT+my own SSDT (edited with the normal X58 edits from d00d's thread) I can boot without disabling NPM, but get no changes in clock or voltage. WIth your DSDT+SSDTs, I see it downclock to 1.6GHz, 1.7GHz, and then 3.4GHz. Nothing in between. Voltage is either .7 or the full 1.3.
Also, the 10.6.6 MBP +10.6.7 MBP update result in a panic a few lines in, but my 10.6.3->10.6.7 combo update is the working booting volume. Perhaps this means I am just sidestepping what we really should get working thorough.
With your DSDT+your two SSDTs I was able to boot without a disabler and see voltage/clock changes (with MSR Tools); however, I also started adding newer versions of each kext that I thought might help with AppleIntelCPUPowerManagement stalling out. So I am not positive which kexts need to be with your DSDT. I assume newer and more of them is probably the best.
Sorry, like I said, this is all a mess still.
Additionally, there is someone on the Tony Mac forums that was able to do this as well, but has not posted any information. He actually reports that AppleIntelCPUPowerManagement+client were both successfully loaded. Mine don't load, even though HPET and LPC do, they just don't cause a crash.
I sent a PM, but no response.
Also, I am still using AnVal. I had to download the latest Xcode in order to try to use RevoBoot and haven't bothered rebooting my main computer yet and making it yet.
I am using the P8p67 as well.