Virtual Box Mac Installation Problem AMD Processor

Hello ,
I am using oracle virtual box 4.1. And my Laptop is ASUS (AMD processor).
My Virtual box settings for MAC was following.
1. Chipset : ICH9
Extended feature : Enable IO APIC
2. Processor : 1 CPU
Extended feature : Enable PAE/NX
3. Acceleration : Enable VT-x / AMD-v
4. Video Memory : 128
Extended feature : Enable 3d Acceleration
Now when I install Mac snow leopard 10.6.2 it says install successful. But when Virtual Box is restarted then it cannot find any active
Boot. plist. [Note that I am using this MAC on Intel Processor]. So please give me solution.
