Well, "PCO" IS CrossDos :-P :-P :-P
Just put the file on the disk, throw it into the WinUAE-drawer on your laptop, start WinUAE, select the file, and let the emulated Amiga boot.
This should give you that old animated disk-drive, you may have seen
if you ever had an Amiga without HD.
Next step would be transfereing your WB.