I'm trying to install OSX86 on my computer with the following specs:

MSI P965 Platinum, Core 2 Duo E6400 2.133GHz
2GB RAM
SATA Hard Drive
Nvidia GeForce 8500GT

I already tried Kalyway 10.5.2, Iatkos 10.5.7 and Ideneb 1.5.1 10.5.7 and I can't make this machine to work.

Somebody can explain what I have to do in order to install any of this distros on my computer?