Having looked at these settings, I see what you mean by simple to add yes, but what to add?
There's an option there to add a disk image, I'm guessing this would be a hard drive image,
like WinUAE has hdf, Winvice would use ..? Is it possible to create a Hard drive image for Winvice?
Second Option is from directory. Is this just add an empty folder and it will act as a virtual hard drive?
What are P00 files?