Turns out Eddie's did the job after all. I had an error with Zeph's release at the end of the install, prob EFI related but I couldn't be bothered so I went for Eddie's.

All good except for the GFX panic at first boot. I removed the proper kexts and then went for Zephs universal Nvidia installer with NVinject 0.2.1. Hopefully I can get my GFX string back later on.

So now I will take it step by step over a few days, I'm not in a hurry and will backup almost every major step of the way.
I'm not going to do the idlehalt tweak just yet cause maybe this release runs without issues.

So thx Eddie for the release. Hopefully you will still make proper updates too. 10.5.3 is near it seems so...

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 Snow Leopard 10.6.7  Gigabyte GA-P35-DS3P  Intel Q6600 @ 3Ghz  Corsair CM2X2048-6400DHX  Gigabyte HD5770 Silent Cell  Samsung SyncMaster 2494SW  ALC889a  Creative T5400 5.1  Maxtor 380215AS  Pioneer DVR-215D  Presonus Inspire 1394  KRK Rokit 5  Wacom Bamboo One 
 SL USB Guide => http://www.infinitemac.com/f57/guide...k-drive-t3705/ 