I made a new LegacyHDA compatible with 10.6.8 and up. Download from here:
They should also work in Lion and ML. To install Use a "HDA Wizard".
I am also working now on a new UniBootX and UniFix for P5W DH Deluxe, fully compatible with the Lion. Details coming soon.
Many thanks for your work man, from the beginning !!
keep us updated