Okay, got it working...wifi, trackpad, sound, ethernet...all seems good.
Only remaining problems found so far are that the Activity Monitor kernel panics the system as soon as you launch it, and the system kernel panics coming out of sleep.
I've repaired permissions, which has fixed the Activity Monitor problem in the past, but no joy.
I've turned off secure virtual memory, set System passwords on the BIOS and done the other steps to disable hibernation...the system goes into sleep properly, and the screen is coming on when it comes out of sleep, but it blue screenspanics almost immediately after that.
Ideas?
Scott