Well, I am running Win XP and I dl'ed iATKOK and burned it to a CD. I get into the installation, I get to: "Select where to install OSX at". And it shows nothing in the listbox?

What do I do?

You'll need to get your hard-disk into a Mac format.
In the menubar,
Utilities - Disk Utility
Select the format and then Erase
That should work...to show up the disk partition to install into.