Alright, here are kexts I use on Snow Leopard. I used the 10.5 ICH8 (SATA) chipset driver because it was the only one that worked. If anyone finds a Snow Leopard 64-bit driver, please let me know.

I uploaded to more places this time around. These are all the same file. Just extract it to SNOWHD/Extra/Extensions and Chameleon will load them first on boot.

http://www.filedropper.com/studio540snowkexts
http://www.zshare.net/download/72825682f1b9a0a1/
http://www.megaupload.com/?d=53M2VA55