I've been using iBoot + Multibeast and I've tried everything. I tried the nvidia one and I've tried the supported version. I've tried each of them with both 10.6 retail and 10.6.3. The one I get furthest with is Nvidia with 10.6.3. I get past the "Select language" but then it says that Mac OS X can't be installed on my computer. Can someone give me a tutorial that will work for me?

Specs:
GA-P55-USB3
i5-750
GT240