I would say LawlessPPC as that was made specifically to get Phenom working on AMD. It's possible the latest Leo4All might work but i'm not sure. FYI, iPC isn't out yet and Zephyroth doesn't work with Phenom at all.

AFAIK the HD3200 IGP will only work in vesa mode with no QE/CI so you'll have to get a new graphics card if you want the full experience.

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 Mac OS X 10.6.4 Retail || Intel Core2 Duo E8200 2.66GHz || Gigabyte G31M-ES2L || GeForce 6600 GT 128MB || Realtek ALC883 Audio || Realtek RTL8169 LAN || Samsung SpinPoint F1 1TB HD || Sony Dual Layer IDE DVD RW DW-D22A || Apple Aluminium Keyboard || Mighty Mouse

 MacBook Pro || 2.4Ghz Core 2 Duo || 200Gb HD || 2Gb Ram || NVIDIA GeForce 8600M GT

 iPhone 4 || 16Gb