In the window that pops up, choose the copy of i Boot.Insert your retail Snow Leopard DVD into your computer's DVD drive.We've already covered how to run a Mac OS X virtual machine with VMWare Fusion on your Hackintosh, but that tutorial won't do you much good if you haven't installed Mac OS X on your PC yet.
Every time you turn on Mac OS X, that RAM that you assign here will be used to run the virtual machine.The RAM will be given back to your normal computer after you turn Virtualbox off.In the storage tree box, you'll see a CD icon labeled "Empty".Click on it and click "Choose a virtual CD/DVD disk file".I'm not sure whether these options actually matter (EFI is definitely the most important variable), but it's better safe than sorry.
Once you're done with that, go to the settings for "Storage".
You will need at least 4 GB of RAM and a dual-core (two core) processor or better.
Personally, the computer I was using for this had a 4-core processor and 12 GB RAM, which is way more than enough.
Installing OS X with Virtualbox on Windows is more difficult than doing it with VMWare Fusion in OS X, because Windows virtualization programs do not "officially" support Mac OS X.
You will not be able to enable full graphics support, for instance.
In addition, make sure that "Enable IO APIC" is checked.