Easiest way is to define some dirs from Windows as your HD's
Launch WinUAE, go to [hard drives] and select [add Directory.. Fill in a Volume label and select the path of where you want "drive" to exists.. No need to fill in the [device name], WinUAE will this for ya..
Same for a hardfile, only this ones creates a "big" file that is used only for WinUAE. The dir. option lets you copy files to and from Windows/A-OS with ease..
Last option, prepare a drive in a real Amiga, and stick it in your PC and select [add Hardrive].. It should appear in the selection box there...
BTW, Nice picture..