you can always try booting iatkos with nawcom boot cd. it found and installed kexts for me. then you will need to put on chameleon bootloader and update and or find kiexts for your configuration it did not find by default. thats the easiest way that ive done. otherwise get a snow leopard retail disc and do the same ive had more trouble that way but still was able to do it. patience and time is what it takes for me. so just keep trying and read what others did in your or similar situations.