I just finished my new GUI folding installer. It is based on mc68ks scripts but wrapped with a GUI. I didn't get Dual CPUs working yet, but that will give me a new excuse to release it again on versiontracker. You can leave feedback here if you want, don't install over an existing mc68k script installation!
http://nuclearnova.com/folding.dmg
http://nuclearnova.com/folding.dmg