ioregexplorer not finding audio HW ? problem patching DSDT

I built a very nice fully working hackintosh a while back and it's great - had to patch the dsdt and do a few other tweaks. Learnt a lot about Mac's and hacking ↗

Now trying to build a new better Hackintosh on a asus P5Q MB with Q6600 CPU and 8800GT video.

I'm nearly there, everything works but the sound - ioregexplorer can't find my audio chip.

A few more details - I have the 2002 Juzzi bios dated 03/04/2009. I'm triple booting XP, Ubuntu and SL 10.6.4

The audio works fine in XP and Ubuntu - the chip gets reported as an ALC888 (not ALC1200 as per the MB spec). So I guess the patched BIOS is ok.

I've extracted the DSDT while in Ubuntu and de-compiled it - no obvious sign of HDEF.

On my original working Hackintosh the HDEF shows under AppleACPIPCI as HDEF@1B - no sign of anything like that on the new machine.

I'm running Chameleon RC3 fully installed but suspect it might be ignoring my patched DSDT - but should IOregexplorer find the HDEF chip with or without a patched DSDT ?

What am I missing here ?

Do I need to do anything to make sure Chameleon takes notice of my patched DSDT ?

BTW - posting this from my nearly perfect new Hackintosh

Thanks again guys (I hope)