I've just completed my first install and upgrade on some old HW I have for a HTPC. On-board sound (both "internal speakers" and optical digital audio), on-board network, and sleep (both manual and automatic with wake from sleep) all work. Only thing I couldn't get is 64-bit.

1) Installed by followed all instructions in post #1.
2) Remove SleepEnabler.kext from E/E.
3) Followed steps 1-8 here: http://www.dailyblogged.com/updating...eopard-10-6-5/ (from post #688; thanks lokigfx), except I had to use a different version of Apple HDA.kext (http://www.mediafire.com/?khmky1qwzzz; from port #654; thanks sublimespot). FYI - AppleHDA.kext goes in S/L/E, not E/E. (Yes, I'm a noob.)
4) Installed the 10.6.5 SleepEnabler.kext (I can't find the link right now but it is easy to find).

Lots of repairing permissions, pfix, reboots, etc. are implied. I did run into some trouble with network and sleep working but that went away after a bunch of reboots.

Does anyone have any suggestions for getting 64-bit working again? It broke before I applied the 10.6.5 SleepEnabler.

My setup:
G31M-ES2L (I think rev. 2) w/ digital audio
E7400 2.80
G.Skill 2x2GB DDR2 PC2-6400
Gigabyte GeForce 7200GS 256MB
BTW211 Bluetooth adapter
Twisted Mellon IR receiver

Thanks to everyone who has come before and made this possible.