Help me please problem whit iATKOS V7

[VMax]

I am new in this first my problem i install good the iATKOS v7 but when say Darwin the apple logo appear and pum inmediatly restart :S
my pc spec

Intel D945GCCR mother board
Intel Pentium 4 3.0 GHZ Hyper Treading
Western Digital 250 GB sata Disk
GeForce 8400 GS 512 MB
LG Burner SATA

iATKOS install good but in the first start when appear the chamaleon wait .. and when Say
Starting Darwin K.O the computer restart again what i need to do for run mac in my PC?